CN106338479A - Measuring method of heavy metal Pb waste water - Google Patents
Measuring method of heavy metal Pb waste water Download PDFInfo
- Publication number
- CN106338479A CN106338479A CN201611053675.8A CN201611053675A CN106338479A CN 106338479 A CN106338479 A CN 106338479A CN 201611053675 A CN201611053675 A CN 201611053675A CN 106338479 A CN106338479 A CN 106338479A
- Authority
- CN
- China
- Prior art keywords
- waste water
- heavy metal
- hot plate
- electric hot
- water sample
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/3103—Atomic absorption analysis
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention belongs to the field of analytical chemistry, and particularly relates to a measuring method of heavy metal Pb in waste water. The measuring method of heavy metal Pb waste water comprises the following steps of 1, making a Pb standard solution curve; 2, selecting 100mL waste water sample and putting into a beaker, adding 5mL concentrated nitric acid, and heating and digesting on an electric hot plate; 3, when the water sample is distilled to 85mL, adding 5mL concentrated nitric acid and 2mL hydrogen peroxide, and continuing heating and digesting on the electric hot plate; 4, when the water sample is distilled to 70mL left, taking down for cooling, adding 2mL 10% ammonium chloride and 10mL 3mol/L HCl after cooling, putting the added ammonium chloride and HCl into a colorimetric tube, conducting constant volume to 100mL, if the solution is relatively turbid, filtering firstly and then measuring; 5, measuring with atomic absorption spectroscopy and recording a data result, substituting the measured result into the Pb standard solution curve, and calculating, so that the content of heavy metal Pb in waste water is obtained. The measuring method of heavy metal Pb waste water can accurately test the content of Pb; and the method has strong operability in and low cost.
Description
Technical field
The invention belongs to analytical chemistry field, more particularly, to a kind of assay method of heavy metal in waste water pb.
Background technology
Heavy metal refers to the metal in 5 × more than 103kg/m3 for the density, such as golden (au), silver-colored (ag), mercury (hg), copper (cu),
Lead (pb), cadmium (cd), chromium (cr) etc..Some heavy metals enter human body by food, disturb human normal physiological function, endanger people
Body health, is referred to as toxic heavy metal, mainly has mercury, cadmium, chromium (cr), lead, arsenic (as), zinc (zn), tin (sn) etc..Wherein, arsenic
Originally belong to nonmetalloid, but according to its chemical property, in view of its toxicity, be typically listed in toxic heavy-metal elements.
Mankind's activity easily causes the heavy metal pollution of water quality.People pass through edible aquatic products so that heavy metal is enriched with human body, sternly
Damage healthy again.The South Sea closed fishing season terminates, and the East Sea closed fishing season also will terminate, and we will enjoy the same of delicious seafood
When, environmental degradation of being also careful feedwater product brings the food-safety problem of heavy metal pollution.
Heavy metal accumulation effect exists in aquatic products, aquatic biological can be made to be poisoned, and then accumulate in human body and cannot arrange
Go out, be detrimental to health.To the toxicity of aquatic livestock typically with mercury as maximum, mercury can gather in fish body heavy metal in a large number, its
Cycles of concentration is up to more than thousand times.In history because the exceeded aquatic products contamination accident of edible heavy metal pollution is still relatively more
, such as minamata disease of Japan etc. is it is simply that because people eat the aquatic products of enrichment mercury, the accumulation ability of fish heavy metal mercury is special
By force.Enrichment principle is very simple, and heavy metal is combined with protein.For biochemical angle, heavy metal enters people knows from experience replacement has
Beneficial metallic element, with the binding ability of enzyme, leads to enzyme to inactivate.
The information being disclosed in this background section is merely intended to increase the understanding of the general background to the present invention, and should not
Recognize when being considered or imply in any form that this information structure has been the prior art well known to persons skilled in the art.
Content of the invention
In order to overcome the defect of prior art, the invention provides a kind of assay method of heavy metal in waste water pb, the party
Method detection speed is fast, easy to operate.
To achieve these goals, the present invention is to employ the following technical solutions realization:
A kind of assay method of heavy metal in waste water pb, comprises the following steps:
(1) make pb standard liquid curve；
(2) take waste water water sample 100ml to put in beaker, add red fuming nitric acid (RFNA) 5ml, electric hot plate heats and clears up；
(3) when water sample steams to 85ml, add 5ml red fuming nitric acid (RFNA) and 2ml hydrogen peroxide, continue at heating on electric hot plate and clear up；
(4) when water sample steams to remaining 70ml, take off cooling, after cooling, add ammonium chloride and the 10ml of 2ml10%
The hcl of 3mol/l, loads in colorimetric cylinder, constant volume is to 100ml, if solution is more muddy, first filters and measures；
(5) with aas determination and record data result, measurement result is substituted into pb standard liquid curve, meter
Calculate, you can obtain the content of heavy metal in waste water pb.
Preferably, heat, on electric hot plate in step (2), the condition cleared up being: temperature 160-180 DEG C, the time is 120-
180min.
Compared with prior art, the invention has the following beneficial effects:
(1) detection method that the present invention provides is capable of the content of Accurate Determining heavy metal in waste water pb.
(2) detection method that the present invention provides is workable, with low cost.
Specific embodiment
With reference to specific embodiment, the specific embodiment of the present invention is described in detail, it is to be understood that the present invention
Protection domain do not limited by specific embodiment.
Embodiment 1:
A kind of assay method of heavy metal in waste water pb, comprises the following steps:
(1) make pb standard liquid curve；
(2) take waste water water sample 100ml to put in beaker, add red fuming nitric acid (RFNA) 5ml, electric hot plate heats and clears up；Electric hot plate
The condition that upper heating is cleared up is: 160 DEG C of temperature, and the time is 120min；
(3) when water sample steams to 85ml, add 5ml red fuming nitric acid (RFNA) and 2ml hydrogen peroxide, continue at heating on electric hot plate and clear up；
(4) when water sample steams to remaining 70ml, take off cooling, after cooling, add ammonium chloride and the 10ml of 2ml10%
The hcl of 3mol/l, loads in colorimetric cylinder, constant volume is to 100ml, if solution is more muddy, first filters and measures；
(5) with aas determination and record data result, measurement result is substituted into pb standard liquid curve, meter
Calculate, you can obtain the content of heavy metal in waste water pb.
Embodiment 2:
A kind of assay method of heavy metal in waste water pb, comprises the following steps:
(1) make pb standard liquid curve；
(2) take waste water water sample 100ml to put in beaker, add red fuming nitric acid (RFNA) 5ml, electric hot plate heats and clears up；Electric hot plate
The condition that upper heating is cleared up is: 180 DEG C of temperature, and the time is 180min；
(3) when water sample steams to 85ml, add 5ml red fuming nitric acid (RFNA) and 2ml hydrogen peroxide, continue at heating on electric hot plate and clear up；
(4) when water sample steams to remaining 70ml, take off cooling, after cooling, add ammonium chloride and the 10ml of 2ml10%
The hcl of 3mol/l, loads in colorimetric cylinder, constant volume is to 100ml, if solution is more muddy, first filters and measures；
(5) with aas determination and record data result, measurement result is substituted into pb standard liquid curve, meter
Calculate, you can obtain the content of heavy metal in waste water pb.
Embodiment 3:
A kind of assay method of heavy metal in waste water pb, comprises the following steps:
(1) make pb standard liquid curve；
(2) take waste water water sample 100ml to put in beaker, add red fuming nitric acid (RFNA) 5ml, electric hot plate heats and clears up；Electric hot plate
The condition that upper heating is cleared up is: 165 DEG C of temperature, and the time is 150min；
(3) when water sample steams to 85ml, add 5ml red fuming nitric acid (RFNA) and 2ml hydrogen peroxide, continue at heating on electric hot plate and clear up；
(4) when water sample steams to remaining 70ml, take off cooling, after cooling, add ammonium chloride and the 10ml of 2ml10%
The hcl of 3mol/l, loads in colorimetric cylinder, constant volume is to 100ml, if solution is more muddy, first filters and measures；
(5) with aas determination and record data result, measurement result is substituted into pb standard liquid curve, meter
Calculate, you can obtain the content of heavy metal in waste water pb.
The content of the pb in waste water water sample in embodiment 1-3 is counted, be the results are shown in Table 1.
Pb content in table 1 waste water water sample
| Process | The content (mg/l) of pb |
| Embodiment 1 | 1.210 |
| Embodiment 2 | 1.212 |
| Embodiment 3 | 1.231 |
The description of the aforementioned specific illustrative embodiment to the present invention illustrate that and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can much be changed
And change.The purpose of selecting and describing the exemplary embodiment is that explaining that the certain principles of the present invention and its reality should
With so that those skilled in the art be capable of and utilize the present invention various different exemplary and
Various different selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (2)
1. a kind of assay method of heavy metal in waste water pb is it is characterised in that comprise the following steps:
(1) make pb standard liquid curve；
(2) take waste water water sample 100ml to put in beaker, add red fuming nitric acid (RFNA) 5ml, electric hot plate heats and clears up；
(3) when water sample steams to 85ml, add 5ml red fuming nitric acid (RFNA) and 2ml hydrogen peroxide, continue at heating on electric hot plate and clear up；
(4) when water sample steams to remaining 70ml, take off cooling, after cooling, add ammonium chloride and the 10ml 3mol/ of 2ml10%
The hcl of l, loads in colorimetric cylinder, constant volume is to 100ml, if solution is more muddy, first filters and measures；
(5) with aas determination and record data result, measurement result is substituted into pb standard liquid curve, calculates,
Heavy metal in waste water pb content.
2. the assay method of heavy metal in waste water pb according to claim 1 is it is characterised in that electric hot plate in step (2)
The condition that upper heating is cleared up is: temperature 160-180 DEG C, and the time is 120-180min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611053675.8A CN106338479A (en) | 2016-11-25 | 2016-11-25 | Measuring method of heavy metal Pb waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611053675.8A CN106338479A (en) | 2016-11-25 | 2016-11-25 | Measuring method of heavy metal Pb waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106338479A true CN106338479A (en) | 2017-01-18 |
Family
ID=57841872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611053675.8A Pending CN106338479A (en) | 2016-11-25 | 2016-11-25 | Measuring method of heavy metal Pb waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106338479A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621453A (en) * | 2017-10-11 | 2018-01-23 | 超威电源有限公司 | The detection method of lead ion content in a kind of power type lead accumulator dividing plate |
| CN109358155A (en) * | 2018-11-23 | 2019-02-19 | 宁波欣辉环保科技有限公司 | A kind of heavy metals composition detection technique to be processed |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004198324A (en) * | 2002-12-19 | 2004-07-15 | Mitsubishi Materials Corp | Analytical method for heavy metal contained in soil |
| CN101251490A (en) * | 2008-04-08 | 2008-08-27 | 西南铝业（集团）有限责任公司 | Method for determining magnesium content in aluminium alloy |
| CN101762560A (en) * | 2010-01-29 | 2010-06-30 | 广东省粮食科学研究所 | Pretreating and calibrating method for sequentially determining content of lead and cadmium elements in rice |
| CN103499479A (en) * | 2013-10-17 | 2014-01-08 | 方玉枝 | Method for detecting content of heavy metal in polymeric material and sample treatment method |
| CN104198665A (en) * | 2014-09-10 | 2014-12-10 | 江苏天瑞仪器股份有限公司 | Method for rapidly determining cadmium in cereal crops |
-
2016
- 2016-11-25 CN CN201611053675.8A patent/CN106338479A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004198324A (en) * | 2002-12-19 | 2004-07-15 | Mitsubishi Materials Corp | Analytical method for heavy metal contained in soil |
| CN101251490A (en) * | 2008-04-08 | 2008-08-27 | 西南铝业（集团）有限责任公司 | Method for determining magnesium content in aluminium alloy |
| CN101762560A (en) * | 2010-01-29 | 2010-06-30 | 广东省粮食科学研究所 | Pretreating and calibrating method for sequentially determining content of lead and cadmium elements in rice |
| CN103499479A (en) * | 2013-10-17 | 2014-01-08 | 方玉枝 | Method for detecting content of heavy metal in polymeric material and sample treatment method |
| CN104198665A (en) * | 2014-09-10 | 2014-12-10 | 江苏天瑞仪器股份有限公司 | Method for rapidly determining cadmium in cereal crops |
Non-Patent Citations (1)
| Title |
|---|
| MYBOYS: "水中重金属的污染评价", 《道客巴巴》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621453A (en) * | 2017-10-11 | 2018-01-23 | 超威电源有限公司 | The detection method of lead ion content in a kind of power type lead accumulator dividing plate |
| CN109358155A (en) * | 2018-11-23 | 2019-02-19 | 宁波欣辉环保科技有限公司 | A kind of heavy metals composition detection technique to be processed |
| CN109358155B (en) * | 2018-11-23 | 2021-06-15 | 朱晓珂 | Process for detecting heavy metal components in wastewater to be treated |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Raghunath et al. | Assessment of Pb, Cd, Cu, and Zn exposures of 6-to 10-year-old children in Mumbai | |
| Kazi et al. | Evaluation of toxic metals in blood and urine samples of chronic renal failure patients, before and after dialysis | |
| Demim et al. | Cadmium and nickel: Assessment of the physiological effects and heavy metal removal using a response surface approach by L. gibba | |
| Baig et al. | Evaluating the accumulation of arsenic in maize (Zea mays L.) plants from its growing media by cloud point extraction | |
| Küpeli et al. | Assessment of trace element levels in muscle tissues of fish species collected from a river, stream, lake, and sea in Sakarya, Turkey | |
| Uluozlu et al. | Speciation and separation of Cr (VI) and Cr (III) using coprecipitation with Ni2+/2-Nitroso-1-naphthol-4-sulfonic acid and determination by FAAS in water and food samples | |
| Safari et al. | Persistent sample circulation microextraction combined with graphite furnace atomic absorption spectroscopy for trace determination of heavy metals in fish species marketed in Kermanshah, Iran, and human health risk assessment | |
| Sarsembayeva et al. | Heavy metal levels in milk and fermented milk products produced in the Almaty region, Kazakhstan | |
| Baig et al. | Arsenic exposure in children through drinking water in different districts of Sindh, Pakistan | |
| Karimi et al. | Probabilistic health risk assessment and concentration of trace elements in meat, egg, and milk of Iran | |
| Dugo et al. | Concentration of Cd (II), Cu (II), Pb (II), Se (IV) and Zn (II) in cultured sea bass (Dicentrarchus labrax) tissues from Tyrrhenian Sea and Sicilian Sea by derivative stripping potentiometry | |
| Evgenakis et al. | Method optimization for heavy metal determination in milk powder: application to milk samples from Greece | |
| CN106338479A (en) | Measuring method of heavy metal Pb waste water | |
| Giangrosso et al. | Hair Mercury Levels Detection in Fishermen from Sicily (Italy) by ICP‐MS Method after Microwave‐Assisted Digestion | |
| Khan et al. | Centrifugation assisted digestion for simultaneous voltammetric determination of ultra trace metal ions in water and milk samples | |
| Golui et al. | A new approach to establish safe levels of available metals in soil with respect to potential health hazard of human | |
| Ugarte et al. | Evaluation of the bioaccumulation of trace elements in tuna species by correlation analysis between their concentrations in muscle and first dorsal spine using microwave-assisted digestion and ICP-MS | |
| CN106769919A (en) | A kind of assay method of heavy metal in waste water Cr | |
| Butcher | Recent advances in graphite furnace atomic absorption spectrometry: a review of fundamentals and applications | |
| CN106442362A (en) | Method for measuring heavy metal Pb in aquatic product | |
| Hanifar et al. | An environmental-friendly procedure based on deep eutectic solvent for extraction and determination of toxic elements in fish species from different regions of Iraq | |
| Ogunlaja et al. | Nutritional evaluation, bioaccumulation and toxicological assessment of heavy metals in edible fruits of FicussurForssk (Moraceae) | |
| Elsheikh et al. | Determination of selected toxic trace elements in agricultural soil and wells water samples by ICP-OES | |
| CN106338480A (en) | Method for measuring heavy metal Cr in aquatic products | |
| Jinadasa et al. | Mercury, cadmium and lead levels in three commercially important marine fish species of in Sri Lanka |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170118 |
|
| WD01 | Invention patent application deemed withdrawn after publication |