TW201816378A - Method and system for accumulating and determining elements in fluid samples - Google Patents

Abstract

The instant invention provides a system and the accompanying method for accumulating and determining the elements in a fluid. The method provided by the instant disclosure comprises the following steps: (a) flowing a fluid sample through an sorbent for concentrating a material to be determined in the sorbent; and (b) directly detecting the sorbent with the target material with a portable x-ray fluorescent spectrometer (XRF) for obtaining a result. The desired results can be obtained by selecting different sorbents based on different material targets and using a specifically pre-programmed XRF. In addition, a pre-warning device can be used to determine the time and duration of sampling. Accordingly, the method and system provided by the instant disclosure can achieve the on-site and real-time monitoring of the fluid sample and reduce the determination cost.

Description

 System and method for enriching and measuring elements contained in a fluid  

The present invention relates to a system and method for enriching and measuring elements contained in a sample, and more particularly to a system and method for enriching and measuring elements contained in a fluid.

In the prior art, in order to measure the elemental composition in a fluid (and gas or liquid) sample, a fluid sample is generally detected using an Inductively Coupled Plasma-Mass Spectrometer (ICP-MS). The principle of operation of ICP-MS is to ionize the sample by inductively coupled plasma, and then separate it according to the sample quality using mass spectrometer for qualitative and quantitative detection.

For example, the ICP-MS is used to detect the heavy metal content in the river water flow. During the operation, it is necessary to take the river water flow sample to the sampling site first, then transport the river water flow sample to the laboratory and perform necessary pretreatment, and then ICP- The MS performs the test. Specifically, after the sample is transported to the laboratory, the sample is atomized by a nebulizer, and the aerosol containing the substance to be analyzed is transported to the plasma by the carrier gas stream. In the following, the element to be analyzed is converted into a monovalent positive ion through a series of reactions such as solvent removal, decomposition, atomization/ionization, and the like. After that, the mass spectrometer (Mass-analyzer) that enters the mass spectrometer through the vacuum interface analyzes the ions of each specific mass-to-charge ratios and detects them by the detection system. , to carry out the qualitative and quantitative work of the elements.

However, the above process has at least the following disadvantages: (1) the inability to achieve immediate monitoring of the effects of the elements contained in the fluid sample, (2) the detection effect is limited by the detection limit of the instrument, and (3) the high cost of the test. First, as far as point (1) is concerned, since in the foregoing process, after the sampling, it is necessary to transport the sample to the laboratory and then perform the testing procedure, which is limited by the scheduled schedule and the required working time. The user is allowed to obtain the test result within a short time after sampling. As far as point (2) is concerned, if the content or concentration of the substance to be monitored in the sample is too low to reach the detection limit of the instrument, it cannot be detected smoothly, or the sample needs to be concentrated and extracted. Programs that increase the complexity of detection. Finally, as far as (3) is concerned, it takes a certain amount of money and time to send the sample to the laboratory for testing.

Furthermore, taking the case of detecting the heavy metal content in the river stream as an example, it may happen that the factory operator illegally discharges the wastewater into the river at night or in a specific time interval. As a result, if the sampling time is not within the interval of the aforementioned smuggling waste water, the monitoring effect cannot be effectively achieved. In other words, how to determine the timing of sampling is also a problem in the art when sampling fluid samples. The same is true for other known related sampling and detection methods.

Accordingly, there is a need to provide a rapid, immediate, and relatively low cost system and method for determining the elements contained in a fluid to address the deficiencies found in the art. Preferably, the system and method can also determine the point in time at which sampling is to be performed to achieve optimal monitoring of the effects of the elements contained in the fluid sample.

In order to solve the above problems, according to one embodiment of the present invention, there is provided a method for determining an element contained in a fluid, comprising the steps of: (a) flowing a fluid sample through an enriched material such that the fluid a test substance of the sample is collected in the enriched material; and (b) directly measuring the enriched material collecting the test substance using a portable X-ray fluorescence analyzer to Obtaining a measurement result, wherein the measurement result includes at least one of an elemental composition of the substance to be tested and a content of the substance to be tested collected by the enriched material.

Preferably, the enriched material is selected from the group consisting of activated carbon in the form of ion exchange resins, granules or powders, alkaline filters, and mixtures thereof.

Preferably, the substance to be tested is selected from the group consisting of elements, anions, cations, compounds, and mixtures thereof.

Preferably, before the step (a), the method further comprises: determining, by an early warning device, a point in time at which the step (a) is performed.

Preferably, the early warning device includes at least one sensor for obtaining an activation signal and a signal transmitter for outputting the activation signal, and the sensor is selected from a sense of pH A group of detectors, temperature sensors, pressure sensors, flow sensors, and conductivity sensors, and combinations thereof.

Another embodiment of the present invention provides a system for determining an element contained in a fluid, comprising a sampling device and a detecting device. The sampling device includes an enrichment material, the sampling device being activated to flow a fluid sample through the enrichment material such that a test substance of the fluid sample is collected within the enrichment material. The detecting device comprises a portable X-ray fluorescence analyzer, and the detecting device directly measures the enriched material by the portable X-ray fluorescence analyzer to obtain a measurement result, wherein The measurement result includes at least one of an elemental composition of the substance to be tested and a content of the substance to be tested in the enriched material.

Preferably, the enriched material is selected from the group consisting of activated carbon in the form of ion exchange resins, granules or powders, alkaline filters, and mixtures thereof.

Preferably, the system for determining an element contained in a fluid further includes an early warning device, wherein the early warning device includes a sensor for obtaining an activation signal for starting the sampling device, and a Transmitting the activation signal to a signal transmitter of the sampling device, the sensor being selected from the group consisting of a pH sensor, a temperature sensor, a pressure sensor, a flow sensor, and a conductivity A group of sensors and their combinations.

Preferably, the fluid sample is a plating solution, the substance to be tested is at least one of a metal ion and a metal compound, and the early warning device comprises a pH sensor and a conductivity sensor. At least one of them.

Preferably, the fluid sample is a gas mixture, the test substance is at least one non-metal compound, and the enriched material is at least one of activated carbon and an alkaline filter.

The main technical means of the present invention is that the method and system for determining the elements contained in a fluid provided by the present invention can pass the "enrichment of materials and use with a portable X-ray fluorescence analyzer. The technical features of the test are used to achieve the effects of the substance to be tested in the concentrated and enriched fluid sample, as well as real-time and on-site detection and analysis.

Specifically, the present invention selects a specific enrichment material for different substances to be tested, and pre-configures a suitable XRF software design to obtain a desired measurement result. In addition, the present invention can further utilize an early warning device to effectively select an optimal sampling time point and a sampling time length for a target element.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings.

1‧‧‧Sampling device

2‧‧‧Detection device

21‧‧‧X-ray source

22‧‧‧Detector

23‧‧‧ Signal Processor

24‧‧‧Central Processing Unit

25‧‧‧ display

3‧‧‧Warning device

31‧‧‧ Sensor

32‧‧‧Signal Transmitter

4‧‧‧Decompression filter

41‧‧‧ cloth funnel

42‧‧‧ suction filter bottle

43‧‧‧Safety bottle

A‧‧‧ sample

1 is a flow chart of a method for determining an element contained in a fluid according to an embodiment of the present invention; FIG. 2 is a functional block diagram of a system for determining an element contained in a fluid according to an embodiment of the present invention; 3 is a schematic structural view of an X-ray fluorescence analyzer used in an embodiment of the present invention; and FIG. 4 is a method and system for measuring an element contained in a fluid according to an embodiment of the present invention, for use in enriching materials A schematic diagram of a reduced pressure filtration device that performs a simple pretreatment.

The following is a description of embodiments of the present invention relating to "systems and methods for determining elements contained in a fluid" by specific specific examples, and those skilled in the art can understand the advantages and effects of the present invention from the disclosure of the present specification. . The present invention can be implemented or applied in various other specific embodiments, and various modifications and changes can be made without departing from the spirit and scope of the invention. In addition, the drawings of the present invention are merely illustrative and are not intended to be described in terms of actual dimensions. The following embodiments will further explain the related technical content of the present invention, but the disclosure is not intended to limit the technical scope of the present invention. For the contents of each paragraph disclosed in the following embodiments, please refer to FIG. 1 to FIG. 4 together.

First, please refer to Figure 1. 1 is a flow chart of a method for determining an element contained in a fluid provided by an embodiment of the present invention. As shown in FIG. 1, a method for determining an element contained in a fluid provided by an embodiment of the present invention includes the following steps: (a) flowing a fluid sample through an enriched material to make the fluid sample Measuring substances are collected in the enriched material (step S102); and (b) directly measuring the enriched material collecting the substance to be tested using a portable X-ray fluorescence analyzer to A measurement result is obtained, the measurement result including at least one of an element of the substance to be tested and a content of the substance to be tested collected by the enrichment material (step S104).

In the above, in step S102, the fluid sample is a gas sample or a liquid sample. For example, the gas sample can be air or exhaust from a factory, and the liquid sample can be a natural water body such as a sea, a river or a lake, a reservoir water, a factory wastewater, or a process water stream (eg, containing organic matter). Electroplating solution) or beverages. In the present invention, the kind of the fluid sample is not limited thereto.

The fluid sample contains a substance to be tested, and the substance to be tested is selected from the group consisting of an element, an anion, a cation, a compound, and a mixture thereof. For example, the element may be an element having an atomic order greater than 11, such as a sulfur atom or an arsenic atom; the cation may be a cation of zinc, cadmium, chromium, copper, nickel, iron, manganese, magnesium or calcium; the anion may be a chloride anion or a metal-containing anion such as a negatively charged chromate, dichromate, permanganate or the like; the compound may be an anionic or cationic metal complex such as gold, silver, copper and ferric cyanide, or a chelate a compound such as ferric citrate.

Further, the compound may contain a sulfur-containing compound, a phosphorus-containing compound, an arsenic-containing compound, a halogen-containing compound, and the like. The sulfur-containing compound may be a sulfate, a sulfite, or a thiosulfate in a water sample, sulfur dioxide, sulfur trioxide, hydrogen sulfide, and a mercaptan in a gaseous stream, or a sulfur-containing amino acid, polypeptide, or protein. The phosphorus-containing compound may be a phosphate, a nucleotide, a nucleic acid or the like. The arsenic-containing compound may be an arsenate. The halogen-containing compound may be iodine (I ₂ ), iodide, iodate, bromine (Br ₂ ), bromide, bromate, chlorine (Cl ₂ ), hypochlorite, perchlorate or the like. In addition to this, the substance to be tested may also be a rare earth metal element. The present invention is not limited thereto as long as the atomic order of the elements in the substance to be tested is greater than 11, and can be detected by the method and system provided by the embodiments of the present invention.

Please also refer to Figure 1. In step S102, the type of the enriched material is selected according to the kind and characteristics of the substance to be tested. The enriched material may comprise an adsorbent material, an absorbing material, and/or an exchange material. In the method provided by the embodiment of the present invention, the enriched material is selected from the group consisting of an ion exchange resin (including an anion exchange resin and a cation exchange resin), activated carbon in a granular or powder form, an alkaline filter material, and a mixture thereof. Group. Examples of collecting different substances to be tested by different enriched materials will be described later with specific examples.

In step S102, the enriched material may be directed through the fluid sample at a selected time point, or the fluid sample may be directed through the enriched material at selected points in time. For example, the enrichment material can be placed in the fluid sample manually, or the enrichment material can be placed in the fluid sample or the fluid sample can be passed through the enrichment material by automated sampling device 1. Thereby, the substance to be tested in the fluid sample is collected in the enriched material. For example, when the substance to be tested is a heavy metal cation and the enriched material is a cation exchange resin, the heavy metal cation can be adsorbed to the enriched material by ion exchange.

The effect of the step S102 is that by using the enriched material, the effect of collecting and concentrating the substance to be tested can be achieved in an instant, in situ and easily. The enrichment material selectively immobilizes the substance to be tested on its structure, while excluding other impurities that are not to be detected, as well as the substrate (eg, water). In this way, not only the detection limit caused by the detection limit of the subsequent detection instrument can be overcome, but also the interference caused by the aforementioned impurities and the matrix can be reduced.

Next, in step S104, the enriched material collected with the substance to be tested is directly measured using a portable X-ray fluorescence analyzer to obtain a measurement result, and the measurement result includes the elemental composition of the substance to be tested, and enrichment. At least one of the content of the substance to be tested collected by the material.

Please refer to Figure 3. 3 is a schematic structural view of an X-ray fluorescence analyzer used in an embodiment of the present invention. In an embodiment of the invention, the detection device 2 is an X-ray fluorescence analyzer. The principle of operation of the X-ray fluorescence analyzer includes the use of a high-voltage X-ray source to emit X-rays to excite atoms in the substance to be tested, to generate secondary X-rays (fluorescence), and to count these energy pulses. Analyze the elemental composition and content of the substance to be tested. Qualitative, quantitative or semi-quantitative purposes can be achieved using an X-ray fluorescence analyzer.

As shown in FIG. 3, the X-ray fluorescence analyzer includes an X-ray source 21, a detector 22, a signal processor 23, a central processing unit 24, and a display. The X-ray source 21 is also referred to as an excitation source, which is an X-ray tube containing a target, and the target may be selected from the group consisting of Rh, Ag, Cr, Mo, and T ) the group consisting of. The choice of target depends on the type and characteristics of the substance to be tested. In the present invention, the material of the target is not limited thereto. The X-ray source 21 is configured to emit X-rays to the sample A, and further components such as a collimator (not shown) and a filter (Filter, not shown) may be further disposed between the X-ray source 21 and the sample. .

In the above, the detector 22 is configured to receive the X-ray ray emitted by the substance to be tested, and the X-ray ray is processed and processed by the signal processor 23 and the central processing unit 24, and can be converted into a qualitative analysis and Quantitative analysis of test results. The test results can be displayed on the display. For this test result, the user can quickly know the elemental composition of the fluid sample, or based on this preliminary result, further determine whether the next sample processing and other tests are needed.

It is worth mentioning that for the type of fluid sample and the characteristics of different enriched materials, it is necessary to program the portable X-ray fluorescence analyzer, for example, to determine the volume of the fluid sample containing different substrates. Line, in order to quickly obtain test results. In the embodiment of the present invention, the content of the substance to be tested refers to the content of the element in the substance to be tested. Based on this test result and other data, the chemical element composition in the fluid sample can be estimated by further analysis and calculation.

The advantage of using the X-ray fluorescence analyzer is that the detection procedure is relatively simple, the equipment cost is low, and the time from the detection to the detection result is relatively short. Furthermore, "on-site" and near-real-real-time detection can be achieved using a portable X-ray fluorescence analyzer. In addition, the X-ray fluorescence analyzer can accurately detect most of the elements (elements with an atomic order greater than 11) without the need for complex and time-consuming sample preparation. Finally, since the X-ray fluorescence analyzer can detect the sample (the enriched material in which the substance to be tested is collected in the embodiment of the present invention), it is not easy to produce unnecessary consumables, and is environmentally friendly.

Next, please refer to Figure 4. 4 is a schematic view of a vacuum filtration apparatus for performing simple pretreatment of an enriched material in a method and system for measuring an element contained in a fluid according to an embodiment of the present invention. Before using the portable X-ray fluorescence analyzer to measure the collected substances to be tested, the fluid or other impurities in the enriched material can be removed by simple pretreatment to avoid interference of the impurities on the detection results, thereby increasing the detection. accuracy.

For example, after sampling with the enriched material, residual fluid and other impurities can be removed by a vacuum filtration device 4 (also known as a vacuum filtration device). As shown in FIG. 4, the enrichment material can be placed in the cloth funnel 41, and the suction filter bottle 42 disposed under the cloth funnel is connected to the air pump (not shown) through the safety bottle 43. The suction filter bottle 42 is also referred to as a suction filter bottle, which is a thick-walled conical flask having a branch pipe. If the amount of the matrix (e.g., water) contained in the enriched material is small, a suction filter tube 42 may be replaced with a suction filter tube. The air pump is usually a water pump.

Detailed means and steps for operating the reduced pressure filtration device 4 described above are well known in the art and will not be described in detail herein. In this way, pre-processing can be carried out at a sampling location or in a laboratory with simple equipment to further ensure the accuracy of the inspection.

Please refer to Figure 1 again, as shown in Figure 2. 2 is a functional block diagram of a system for determining elements contained in a fluid provided by an embodiment of the present invention.

Before step S102, it is further included that the time point of executing step S102 is determined by the early warning device 3 (step S100). Specifically, by providing the early warning device 3, it is possible to more accurately control the time for sampling with the enriched material. The early warning device 3 includes at least one sensor 31 for obtaining the start signal of the sampling device 1, and a signal transmitter 32 for outputting the start signal sampling device 1, and the sensor 31 is selected from the sense of pH value. A group of sensors, temperature sensors, flow sensors, and conductivity sensors, and combinations thereof.

It should be noted that the early warning device 3 can be used to determine the position of performing step S102 and the sampling time (Duration) in addition to determining the time point (Timing) for performing step S102. For example, the early warning device 3 may include a plurality of sensors 31 disposed at different locations in a liquid or gas body (eg, a river or an exhaust gas exhaust pipe) that provides a fluid sample, and the data obtained from each sensor 31 is obtained. The warning device 3 can decide to perform the position of step S102. In addition, at least one of the time point, the position, and the time of sampling performed in step S102 may be preset by the user.

In view of the above, depending on the type and characteristics of the fluid sample to be monitored, different sensors 31 can be selected to obtain the activation signal. In other words, the sensor 31 can generate an activation signal based on changes in the physical and chemical properties of the monitored fluid sample, thereby instructing the user or the automated sampling device 1 to sample using the enrichment material.

For example, if the water quality at a specific location in the river is to be monitored, an early warning device 3 equipped with a pH sensor and a signal transmitter 32 may be installed at the sampling location. The signal transmitter 32 of the early warning device 3 can be connected to the sampling device 1 for placing the enriched material or the electronic device signal of the user (inspector) for signal transmission through electrical connection or wireless or Bluetooth mode. The activation signal generated by the sensor 31 is transmitted to the sampling device 1 or the user end.

According to the above, when the pH sensor of the early warning device 3 senses that the pH value of the river water flow has changed (for example, the water quality may be acidic due to heavy metal ions contained in the wastewater), the pH value The sensor can obtain the activation signal, and the signal transmitter 32 transmits the activation signal to the user's electronic device to remind and instruct the user to perform the work of placing the enriched material. In another embodiment, the signal transmitter 32 can transmit the activation signal to the automated sampling device 1, and the sampling device 1 automatically delivers the enriched material to a fixed point in the river, or the sampling device 1 guides the river water flow. Enriched materials.

As described above, by the setting of the early warning device 3, it is possible to more effectively determine the time point at which the fluid sample is sampled with the enriched material to obtain an optimum monitoring effect.

Embodiments of the invention additionally provide a system for determining the elements contained in a fluid. Referring also to Figure 2, the system for determining the elements contained in the fluid comprises a sampling device 1, a detection device 2 and an early warning device 3. The sampling device 1 comprises an enrichment material, and the sampling device 1 is activated to cause the fluid sample to flow through the enrichment material such that the analyte of the fluid sample is collected within the enrichment material.

As described above for the method for determining an element contained in a fluid, the fluid sample is a gas sample or a liquid sample. For example, the gas sample can be air or exhaust from a factory, and the liquid sample can be a natural water body such as a sea, a river, or a lake, a reservoir water, a factory wastewater, or a process water stream (eg, a plating solution). Or a drink, etc. As mentioned earlier, the type of fluid sample is not limited here. Similarly, the types of substances to be tested and the materials to be enriched are also as described above for the method for determining the elements contained in the fluid, and will not be described again here.

The detecting device 2 comprises a portable X-ray fluorescence analyzer, and the detecting device 2 directly measures the enriched material by a portable X-ray fluorescence analyzer to obtain a measurement result. The measurement result includes at least one of an elemental composition of the substance to be tested and a content of the substance to be tested in the enriched material.

In addition, the system for determining an element contained in a fluid provided by an embodiment of the present invention further includes an early warning device 3. As shown in FIG. 2, the early warning device 3 includes a sensor 31 for obtaining an activation signal for starting the sampling device 1, and a signal transmitter 32 for transmitting the activation signal to the sampling device 1. The sensor 31 is selected from the group consisting of a pH sensor, a temperature sensor, a flow sensor, a conductivity sensor, and combinations thereof.

The system for determining the elements contained in a fluid provided by an embodiment of the present invention, wherein the details of each device and component are as previously described for the method for determining the elements contained in the fluid, and will not be described in detail.

Next, the actual mode of operation of the present invention will be exemplified by specific embodiments. The following specific examples are merely examples, and the invention is not limited thereto.

[First embodiment]

The method and system for determining elements contained in a fluid provided by the present invention can be used to monitor the water quality of a river. For example, for the phenomenon that the factory steals wastewater into the river, the method and system provided by the invention can collect and concentrate heavy metal ions in the river by enriching materials, so as to achieve the purpose of monitoring the water quality of the river in real time. In addition, in the first embodiment, the use of the early warning device 3 is further matched to know the time point or location of the change of the river water quality, to determine the occurrence or the occurrence of the smuggling of waste water, and the occurrence position, and cooperate with the interpretation result. Sampling. In this way, it is possible to monitor the state of the river water quality more accurately and quickly, and to achieve the effect of eliminating the illegal discharge of wastewater to the river.

In a first embodiment, a cation exchange resin is used as an enrichment material for measuring heavy metal cations in river water streams. For example, the cation exchange resin is a polystyrene-divinylbenzene-based resin and can be classified into a strong acid type cation exchange resin (having a sulfonic acid group (-SO ₃ H) on the surface) Medium strong acid type cation exchange resin (phosphorus (-PO ₃ H ₂ ), hypophosphorous acid group (-PO ₂ H ₂ ) on the surface) and weak acid type cation exchange resin (having carbonic acid or hydroxyl groups on the surface). In this embodiment, a strong acid type cation exchange resin is selected as the enrichment material.

The heavy metal cations in the river stream may include aluminum (Al), arsenic (As), selenium (Se), antimony (Sb), barium (Ba), beryllium (Be), cadmium (Cd), chromium (Cr), cobalt ( Co), copper (Cu), lead (Pb), nickel (Ni), silver (Ag), thallium (Tl), mercury (Hg), vanadium (V), zinc (Zn), iron (Fe), manganese ( Mn), molybdenum (Mo), thorium (Th), gallium (Ga), indium (In), platinum (Pt), germanium (Ge), zirconium (Zr), and uranium (U).

The cation exchange resin can be packed in a filled bag (such as a mesh bag) or other packaging material and placed in a desired location in the river to be monitored. In one embodiment, the effect of collecting heavy metal cations in the river stream is achieved by a sampling device 1 consisting of a cation exchange resin, a filling bag, and a support frame. Specifically, after the cation exchange resin is loaded into the filling bag, the filling bag can be fixed to a support frame. Therefore, when the sampling device 1 is placed in the river, the support frame can secure the position of the filling bag filled with the cation exchange resin without being displaced by the flow of the river water.

Through the flow of water in the river, a fluid sample (river water) containing the substance to be tested (i.e., heavy metal cation) is collected in the cation exchange resin by the cation exchange resin loaded in the packed bag. The chemical reaction mechanism for collecting heavy metal cations by cation exchange resins is well known in the art and will not be described in detail herein.

When the heavy metal cation is collected by the cation exchange resin, the solvent (i.e., water) of the fluid sample and other substances that are not adsorbed to the cation exchange resin via ion exchange are not collected by the enriched material. Therefore, when the detection and analysis are performed by the subsequent detection device 2, the background value and the interference signal caused by other substances can be greatly reduced.

According to the above, after the enriched material is placed at a fixed point in the river for a predetermined time (for example, several minutes, hours or days), the enriched material collecting the substance to be tested is taken out, and a simple pretreatment is performed. For example, by removing the residual water by a reduced pressure method, the enriched material collected with the substance to be tested can be detected immediately and directly using a portable X-ray fluorescence analyzer. By pre-determining the calibration curve and elemental analysis data of the X-ray fluorescence analyzer, the type and content of the substance to be tested in the fluid sample can be quickly obtained.

[Second embodiment]

The method and system for determining the elements contained in the fluid provided by the embodiments of the present invention can be used to monitor the concentration of the plating solution in the plating bath of the electroplating factory. Specifically, in the plating process, metal ions in the plating solution are consumed as the process proceeds, and thus the concentration of the plating solution is lowered.

By using the enrichment material of the embodiment of the present invention, various metal ions in the plating solution can be collected and concentrated for qualitative and quantitative analysis. Also. By setting up an early warning system, it is possible to effectively monitor changes in the elements contained in the plating solution.

In a second embodiment, the plating bath is equipped with an automated sampling system. The automated sampling system includes a controller, a plating solution output tube electrically connected to the controller, and a detection container. The detection container contains a plurality of detection barrels, and each detection barrel is provided with an enrichment material. In this particular embodiment, the test container contains 12 test buckets.

The detection procedure of the second embodiment can be performed while the electroplating process is being performed. At the beginning of the test, the controller controls the plating solution output tube to guide the plating solution in the plating tank to the detection container at a fixed time point. Specifically, the controller controls the plating solution output tube to direct the quantitative plating solution to different detection barrels every hour. After 12 hours of the process, 12 test tanks were filled with a metered plating solution. At this time, the portable X-ray fluorescence analyzer can be used to chemically analyze the enriched materials in the 12 detection tanks to obtain the relationship between the composition and concentration of the plating solution in the plating tank at different time points.

[Third embodiment]

In a third embodiment, a method and system for determining an element contained in a fluid provided by an embodiment of the invention is for determining an anion in a fluid sample. Specifically, sulfate, sulfite, arsenate, arsenite or phosphate can be collected and concentrated via an anion exchange resin (ie, an enriched material) and then analyzed by portable X-ray fluorescence at the sampling site. Instrument detection. The fluid sample can be drain water from a factory or laboratory process stream, or water in a natural water body such as a river, reservoir, or seawater.

[Fourth embodiment]

In a fourth embodiment, a method and system for determining an element contained in a fluid provided by an embodiment of the present invention is for measuring hydrogen sulfide or sulfur dioxide in the air. In other words, in this embodiment, the fluid sample is air and the material to be tested is hydrogen sulfide or sulfur dioxide. The sulfur-containing compound may be collected from an alkaline filter or a lime-containing activated carbon, and the alkaline filter containing the sulfur-containing compound and the activated carbon may be detected and analyzed by a programmed portable X-ray fluorescence analyzer.

It is worth noting that for hydrogen sulfide, sulfur dioxide or sulfate compounds, the detection limit of the prior art is high, that is, low-content, low-concentration sulfur-containing compounds are more difficult to detect by prior art. However, since the present invention achieves the effect of enriching and enriching the substance to be tested (sulfur-containing compound) by enriching the material (alkaline filter material or activated carbon), the limitation of the detection limit of the existing apparatus can be overcome. In other words, by using the enriched material, the substance to be tested in the fluid sample can be accumulated, and then the content of the substance to be tested in the original unit fluid sample can be calculated by pushing back.

[Fifth Embodiment]

In a fifth embodiment, a method and system for determining an element contained in a fluid provided by an embodiment of the present invention is for determining a phosphate additive in a juice.

For the foregoing test substance, the fifth embodiment of the present invention uses an anion exchange resin as an enrichment material to achieve the effect of selectively adsorbing the substance to be tested.

Similarly, the enriched material from which the substance to be tested is collected is detected and analyzed by a portable X-ray fluorescence analyzer.

[Sixth embodiment]

In a sixth embodiment, a method and system for determining an element contained in a fluid provided by an embodiment of the present invention is for determining organic mercury, organic arsenic, and other organometallic compounds in a process sulfur.

For the foregoing test substance, the sixth embodiment of the present invention uses activated carbon as an enrichment material. Thereafter, the enriched material collected with the substance to be tested is detected and analyzed by a portable X-ray fluorescence analyzer.

[Advantageous Effects of Embodiments]

In summary, the present invention has an advantageous effect that the method and system for measuring elements contained in a fluid provided by the present invention can be detected by using an enriched material and being combined with a portable X-ray fluorescence analyzer. The technical features are used to achieve the effects of the substances to be tested in the concentrated and enriched fluid samples, as well as real-time and on-site detection and analysis.

In other words, unlike the prior art, the fluid sample is directly extracted to the laboratory for detection and analysis. The present invention selects a specific enrichment material for the type and characteristics of the substance to be tested, and collects and concentrates the fluid sample through the enrichment material. The substance to be tested is then directly and directly measured by the portable X-ray fluorescence analyzer to achieve the goal of rapidly detecting and effectively monitoring the elements contained in the fluid sample. In this way, in addition to greatly improving the efficiency of the elements contained in the monitoring fluid sample, the detection cost can be significantly reduced.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, equivalent technical changes made by using the present specification and the contents of the drawings are included in the protection scope of the present invention. .

Claims (10)

 A method for determining an element contained in a fluid, comprising the steps of: (a) flowing a fluid sample through an enriched material such that a substance to be tested of the fluid sample is collected in the enriched material And (b) directly measuring the enriched material in which the substance to be tested is collected using a portable X-ray fluorescence analyzer to obtain a measurement result, wherein the measurement result includes the At least one of an elemental composition of the substance and a content of the substance to be tested collected by the enriched material.    The method for determining an element contained in a fluid according to claim 1, wherein the enriched material is selected from the group consisting of activated carbon, an alkaline filter material, and a mixture thereof in the form of an ion exchange resin, a granule or a powder. The group consisting of.    The method for determining an element contained in a fluid according to claim 1, wherein the substance to be tested is selected from the group consisting of an element, an anion, a cation, a compound, and a mixture thereof.    The method for determining an element contained in a fluid according to claim 1, wherein, before the step (a), further comprising: determining, by an early warning device, a time point at which the step (a) is performed.    The method for determining an element contained in a fluid according to claim 4, wherein the early warning device comprises at least one sensor for obtaining an activation signal and a signal transmitter for outputting the activation signal And the sensor is selected from the group consisting of a pH sensor, a temperature sensor, a pressure sensor, a flow sensor, and a conductivity sensor, and combinations thereof.    A system for determining an element contained in a fluid, comprising: a sampling device comprising an enrichment material, wherein a fluid sample is passed through the sampling device to flow through the enrichment material such that a test substance of the fluid sample is collected in the enriched material; and a detecting device comprising a portable X-ray fluorescence analyzer, wherein the detecting device is analyzed by the portable X-ray fluorescence The apparatus directly measures the enriched material to obtain a measurement result, wherein the measurement result includes at least one of an elemental composition of the substance to be tested and a content of the substance to be tested in the enriched material. By.    The system for determining an element contained in a fluid according to claim 6, wherein the enriched material is selected from the group consisting of activated carbon, an alkaline filter material, and a mixture thereof in the form of an ion exchange resin, a granule or a powder. The group consisting of.    The system for determining an element contained in a fluid according to claim 6, further comprising an early warning device, wherein the early warning device includes a sensor for obtaining an activation signal for starting the sampling device at the beginning, and a Transmitting the activation signal to a signal transmitter of the sampling device, the sensor is selected from the group consisting of a pH sensor, a temperature sensor, a pressure sensor, a flow sensor, and a conductive A group of rate sensors and their combinations.    The system for determining an element contained in a fluid according to claim 8, wherein the fluid sample is a plating solution, and the substance to be tested is at least one of a metal ion and a metal compound, and the The early warning device includes at least one of a pH sensor and a conductivity sensor.    The system for determining an element contained in a fluid according to claim 8, wherein the fluid sample is a gas mixture, the test substance is at least one non-metal compound, and the enriched material is activated carbon and At least one of the alkaline filters.