CN107796689A - The ICP MS quick determination methods of lead in soy sauce, total arsenic are determined simultaneously - Google Patents
The ICP MS quick determination methods of lead in soy sauce, total arsenic are determined simultaneously Download PDFInfo
- Publication number
- CN107796689A CN107796689A CN201710981267.7A CN201710981267A CN107796689A CN 107796689 A CN107796689 A CN 107796689A CN 201710981267 A CN201710981267 A CN 201710981267A CN 107796689 A CN107796689 A CN 107796689A
- Authority
- CN
- China
- Prior art keywords
- sample
- soy sauce
- icp
- resolution
- lead
- 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
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
Abstract
The invention discloses a kind of while determine the ICP MS quick determination methods of lead in soy sauce, total arsenic, comprise the following steps：（1）Sample digestion；（2）ICP MS instruments detect.Beneficial effects of the present invention：（One）Chemical reaction condition is improved, the resolution of sample is accelerated, shortens detection time, improve detection efficiency；（Two）Volatilization loss and mutually pollution interference, easy to operate, reliable, efficient are not easily caused with closed, temperature are low, and resolution effect is good, detection preci-sion and accuracy is high；（Three）Sample pre-treatments Liquid Residue empties without heating, directly reclaims, and environmental pollution is small；（Four）The sample of pre-treatment is more；（Five）Few using reagent, equipment energy consumption is low, and testing cost is low.
Description
Technical field
The present invention relates to a kind of while determine the ICP-MS quick determination methods of lead in soy sauce, total arsenic.
Background technology
With the raising developed rapidly with living standards of the people of food industry, there is sky in the production of flavouring and market
Preceding is flourishing and prosperous.It is reported that China's soy sauce yield in 2012 has reached 7,000,000 tons, 5.2 kilograms of pre-capita consumption, but away from
From Japan, 7.8 kilograms of level also has larger gap per capita, with the upgrading of product structure, it is contemplated that following industry speedup reaches 10-
15%.
Lead, arsenic belong to 10 kinds of chemicals for causing great public health concern that the World Health Organization lists.Wherein, lead pair
The influence of body is systemic and multisystem, and main target organ is nervous system and hemopoietic system.Intake is excessive, it may appear that
The neurasthenia symptom such as fatigue, lassitude, absent minded, headache, giddy, insomnia and dreamful sleep, and have slight excited, irritability
Irritability, anxious, the change in the spirit such as hysteria sample breaking-out or mood；The alimentary canal disease such as poor appetite, nausea, abdominal discomfort
Shape；Male's sexual hypoesthesia, impotence, feminine menstrual are disorderly；Person in middle and old age's heart, cerebrovascular disease and respiratory system chronic disease.Arsenic-U.S.'s poison
Thing and disease registration administration are listed in the first place of " cause a disease poisonous substance list ", and international cancer research tissue is classified as I class carcinogenic substance.
Intake is excessive, and skin can be caused pigmentation and/or depigmentation, hyperkeratinization and cell carcinogenesis occur；The circulatory system occurs and the heart
Flesh damages relevant electrocardiographic abnormality and local microcirculation disorder, causes Reynolds syndrome, bulbar conjunctiva abnormal circulation, heart and brain blood
Pipe disease etc.；There is headache, drowsiness, irritated, decrease of memory in nervous system, even stupor of fainting from fear and peripheral nerve are scorching adjoint
The central nervous system impression symptom such as myasthenia, pain；There is haemolysis bib and blocks renal tubule in urinary system, causes arsenic
Property acute renal failure, renal interstitial and renal tubule are congested, oedema；Digestive system causes liver pathology to change；Respiratory system
Cause lung cancer morbidity rate to raise and inhibitory action is produced to body's immunity.
National food safety standard GB 2717《Sauce sanitary standard》Lead, total arsenic content in soy sauce are proposed clearly
Regulation.The CCGF 121.1 that State General Administration for Quality Supervision formulates《Soy sauce Quality supervision sampling implementation specification》By lead, arsenic in soy sauce
It is classified as and is directly related to health, qualitative items of the utmost importance safe to use.Standard GB/T/T 5009.39《Soy sauce health mark
Accurate analysis method》, it is specified that GB 5009.12 is respectively adopted in lead, the project of total arsenic two in soy sauce《The measure of Pb in food》And GB
5009.11《The measure of total Arsenic in Food and inorganic arsenic》Detected.
Soy sauce is more using raw material type, complex manufacturing, in inoculation after strain, to pass through weather exposure etc., all may
And easily entrain the poisonous and harmful elements such as lead, arsenic.Especially because soy sauce industry threshold is low, market potential is huge, makes soy sauce row
The good and bad jumbled together for industry, and some individual workships get on the job with indigenous methods, and factory building sanitary condition is very poor, and equipment is exactly basket, cylinder, pot, bucket, and no sterilization is set
Apply, pack the simple packaging of mostly in bulk, bag or bottle, serious safety and sanitation hidden danger be present.For many years, constantly there is soy sauce detection
National food safety standard GB 2717 is not met《Sauce sanitary standard》Defined report, therefore, State General Administration for Quality Supervision works out
CCGF 121.1《Soy sauce Quality supervision sampling implementation specification》And many places, as Xinjiang Uygur Autonomous Regions works out
Manufacturing enterprise's quality safety risk point inventory etc., further specification soy sauce enterprise production and management.To ensure the safety eaten, food is put
The heart, quality of sauce is strictly controlled, avoid jeopardizing the event generation of health of human body, lives and properties, it is necessary to strengthen related check detection,
Brute force technique support is provided to strengthen supervision.
At present, domestic GB/T 5009.39《The analysis method of sauce sanitary standard》, it is specified that lead, the project of total arsenic two in soy sauce
GB 5009.12 is respectively adopted《The measure of Pb in food》With GB 5009.11《The measure of total Arsenic in Food and inorganic arsenic》Two
Standard method.The GB 5009.268-2016 that the two standard methods and on June 23rd, 2017 implement《Multielement in food
Determine the first method inductively coupled plasma mass spectrometry》Micro-wave digestion pretreatment process specified in standard need to disposably be put into greatly；
For other method there is also sample pre-treatments trouble, link step is more, and time-consuming, more using reagent, and pollution is big, and the consumption energy is high,
The defects of detection speed is slow, and cost is high.It is particularly in sample pretreatment process that the reagents such as strong acid (perchloric acid, nitric acid etc.) is direct
Heating is discharged into atmospheric environment, causes serious environmental pollution, and this, will be tight for many is positioned at the laboratory in old urban district
Ghost image rings its survival and development.To change current test in laboratory present situation, it is necessary enrich low row, efficiently, it is quick, easy
Detection means and method are examined, thus, this method has been invented in foundation.
The content of the invention
The technical problems to be solved by the invention are：Present invention offer is a kind of while determines lead in soy sauce, the ICP- of total arsenic
MS quick determination methods.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
ICP-MS quick determination methods that are provided by the invention while determining lead in soy sauce, total arsenic, comprise the following steps：
(1) sample digestion
Soy sauce sample 0.5mL accurately is pipetted, is placed in 50mL tool grinding port plug glass centrifuge tubes, adds 5mL nitric acid, it is rapid to add
Enter 1mL hydrogen peroxide, gently shake, fully mix, ultrasound resolution 5-10min, be then put into grinding port plug glass centrifuge tube
Auxiliary agent A is cleared up, continues ultrasound resolution 15-20min, after the completion of ultrasonic, filtering；
Filtrate after filtering is placed in another 50mL tool grinding port plug glass centrifuge tubes, is put in grinding port plug glass centrifuge tube
Enter and clear up auxiliary agent B, then add 3mL nitric acid and 1mL hydrogen peroxide, gently shake, fully mix, ultrasound resolution 5-15min, surpass
After the completion of sound, filtering, secondary deionized water or distilled water constant volume are then added, stood, determined for ICP-MS.
(2) ICP-MS instruments detect
It is internal standard element to select Ge, Bi, using instrumental conditions referring to table 1；Elementary analysis pattern is referring to table 2；It is to be measured
The mass-to-charge ratio of element and internal standard element is referring to table 3：
The icp mses of table 1 operate reference conditions
Note：Auxiliary gas, carrier gas, plasma gas are argon gas, and purity is more than or equal to 99.999%.
The element determination pattern of table 2
3 element to be measured of table recommends the isotope and internal standard element of selection
。
Lead, total arsenogen cellulose content are calculated by (1) formula in sample：
In formula：
X --- sounding lead, total arsenogen cellulose content are treated in sample, unit is milligrams per liter (mg/L)；
C --- total arsenic, lead element mass concentration are tested in sample solution, unit is micro- gram per liter (μ g/L)；
c0--- total arsenic, lead element mass concentration are tested in sample blank liquid, unit is micro- gram per liter (μ g/L)；
V --- sample digestive juice constant volume, unit are milliliter (mL)；
F --- sample extension rate；
M --- sample pipettes volume, and unit is milliliter (mL)；
1000 --- conversion coefficient.
Preferably, resolution auxiliary agent A of the invention be selected from hollow glass micropearl, white carbon, pearl powder, sepiolite, fluorite,
Fluorination is received, one kind in ice crystal, calcite.Auxiliary agent B is cleared up in hollow glass micropearl, white carbon, diatomite, perlite
One kind.
Further, it is that resolution auxiliary agent A is selected from hollow glass micropearl, disappears that the present invention, which provides a kind of combination for clearing up auxiliary agent,
Enzymolysis auxiliary agent B is selected from white carbon.The particle diameter of described hollow glass micropearl is 10-30 microns, and 0.5mL soy sauce sample is corresponding to be added
0.5-1 grams of hollow glass micropearl.0.5mL soy sauce sample correspondingly adds 0.5-1 grams of white carbon.
The digestion procedure of foodstuff sample is basically divided into dry method resolution, Wet, high-pressure sealed resolution and microwave and disappeared
Xie Si kinds,
Wherein：
Dry method resolution is that sample is first carbonized, is ashed, and can be not added with or add seldom reagent, and detection blank value is low；Decompose
Thoroughly, simple to operate, grey partial volume is seldom after calcination, can handle more sample, can be enriched with component to be measured, reduces detection
Limit；But pre-treatment time length be present, ashing temperature height easily causes the loss of Volatile Elements, and crucible has certain suction to component to be measured
Use is given over to, the defects such as measurement result and the rate of recovery are low.
Wet is that digestion solution is directly added into sample, provides oxidation environment using digestion solution, heats organics removal.
Heating-up temperature is low, can reduce the loss of Volatile Elements, and other all easy-to-use heating means of acid are removed in addition to phosphoric acid, and container attachment is inhaled
Stay loss less, corrosion it is small, it is simple to operate, but have that Specimen eliminating is limited in one's ability, and resolution amount is small, and reagent dosage is big, detect blank
Value is high, the defects of producing a large amount of pernicious gases.
High-pressure sealed resolution is to be directly added into digestion solution, is cleared up under counteracting tank mesohigh.The advantages of possessing Wet,
But the defects of digestion time is grown, and the digestion solution volatile matter of leakage causes instrument and equipment and Experimental Establishment heavy corrosion.
Micro-wave digestion is using the digestion solution and sample in microwave heating closed container, makes sample quick at high temperature under high pressure
The Wet technology of resolution.Closed, temperature control is good, and resolution ability is strong, and reagent consumption is few, and detection blank is low, volatile member
Element loss is few, mutually pollutes small, and the rate of recovery is good, and accuracy in detection and precision are high, but microwave dissolver is once put into greatly, is cleared up
The defects of cooling velocity is slow.Microwave Digestion is new pretreatment technology recent years, is disappeared in high-pressure closed vessel
Solution, temperature is not high, quick, complete, volatilization loss is small and pollutes the advantages that small, reagent dosage is few, easily controllable.
The present invention is improved on the basis of existing micro-wave digestion, container, the process of resolution to micro-wave digestion
Improved.The present invention is cleared up as digestion utensil using having grinding port plug glass centrifuge tube, advantage：1) it is, inexpensive, institute
Some units can use；2) it is, closed, it is possible to reduce external and sample room mutual pollution, it is straight to reduce harmful resolution gas
Run in into air；3) substantial amounts of sample, can be once handled, detection efficiency is high, and detection speed is fast；4), reagent dosage is small etc. excellent
Point.
Further, in order to improve the speed of resolution and efficiency, lead, arsenic etc. are discharged, the present invention is in digestion process
It is middle to add resolution auxiliary agent.
At present, standard GB/T 5009.12《The measure of Pb in food》With GB 5009.11《Total Arsenic in Food and inorganic
The measure of arsenic》Lead, the pre-treating method of total arsenic mainly use above-mentioned four kinds of digestion procedures in regulation food (including soy sauce)；2017
The GB 5009.268-2016 that on June 23, in implements《Measure the first method inductivity coupled plasma mass spectrometry of multielement in food
Method》Lead, two kinds of pre-treating methods of total arsenic fall within above-mentioned four kinds of digestion procedures in food specified in standard (including soy sauce),
Its advantage and disadvantage is clearly.
Thus, the present invention produces a large amount of cavitation bubbles by radiation pressure in digestion solution by ultrasonic wave or tears liquid
Into the hole of many very littles, the serial dynamic process such as formation, vibration, growth, contraction or even the collapse of complex is shown as, is caused
Local moment produces high temperature, high pressure, forms strong cavitation effect and disturbance effect；Microjet caused by ultrasonic wave can be cut simultaneously
Weak intermolecular active force, mass transfer velocity is increased, form sound bearing medium particle and the mechanical effect of vibration displacement and transaudient occurs
Medium absorbs acoustic energy and is converted into the multistage effect such as the fuel factor of heat energy, so as to form the newest sauce of closed+digestion solution+ultrasonic wave
Oil samples digestion procedure, that is, have a grinding port plug glass centrifuge tube ultrasonic wave Wet soy sauce new technology, not only improves chemical anti-
Answer condition, accelerate the resolution of sample, shorten detection time, and with closed, temperature it is low do not easily cause volatilization loss and
The advantages that mutually pollution is disturbed, efficient digestion effect is good, detection preci-sion and accuracy is high.
Beneficial effects of the present invention：
(1) chemical reaction condition is improved, especially improves the resolution condition in pre-treatment, accelerates the resolution of sample,
Detection time is shortened, improves detection efficiency；(2) have closed, temperature is low not easily cause volatilization loss and mutually pollute dry
Disturb, be easy to operate, be reliable, be efficient, resolution effect is good, detection preci-sion and accuracy is high；(3) sample pre-treatments Liquid Residue without
Heating emptying, is directly reclaimed, and environmental pollution is small；The sample of (four) pre-treatments is more；(5) it is few using reagent, equipment energy consumption
Low, testing cost is low.
Brief description of the drawings
Fig. 1 is total arsenic element standard curve.
Fig. 2 is lead element standard curve.
Embodiment
Embodiment 1
Lead, the ICP-MS quick determination methods of total arsenic in soy sauce are determined while the present embodiment provides, is comprised the following steps：
(1) sample digestion
Soy sauce sample 0.5mL accurately is pipetted, is placed in 50mL tool grinding port plug glass centrifuge tubes, adds 5mL nitric acid, it is rapid to add
Enter 1mL hydrogen peroxide, gently shake, fully mix, ultrasound resolution 5-10min, be then put into grinding port plug glass centrifuge tube
Auxiliary agent A is cleared up, continues ultrasound resolution 15-20min, after the completion of ultrasonic, filtering；
Filtrate after filtering is placed in another 50mL tool grinding port plug glass centrifuge tubes, is put in grinding port plug glass centrifuge tube
Enter and clear up auxiliary agent B, then add 3mL nitric acid and 1mL hydrogen peroxide, gently shake, fully mix, ultrasound resolution 5-15min, surpass
After the completion of sound, filtering, secondary deionized water or distilled water constant volume are then added, stood, determined for ICP-MS.
Resolution auxiliary agent A is selected from hollow glass micropearl, and resolution auxiliary agent B is selected from white carbon.The grain of described hollow glass micropearl
Footpath is 30 microns, and 0.5mL soy sauce sample is corresponding to add 0.5 gram of hollow glass micropearl and 1 gram of white carbon.
Ultrasonic wave clears up instrument parameter：Supersonic frequency：40kHz；Ultrasonic power：500w；Temperature：70-80℃；(2)ICP-MS
Instrument detects
It is internal standard element to select Ge, Bi, using instrumental conditions referring to table 1；Elementary analysis pattern is referring to table 2；It is to be measured
The mass-to-charge ratio of element and internal standard element is referring to table 3.
Lead, total arsenogen cellulose content are calculated by (1) formula in sample：
In formula：
X --- sounding lead, total arsenogen cellulose content are treated in sample, unit is milligrams per liter (mg/L)；
C --- total arsenic, lead element mass concentration are tested in sample solution, unit is micro- gram per liter
(μg/L)；
c0--- total arsenic, lead element mass concentration are tested in sample blank liquid, unit is micro- gram per liter (μ g/L)；
V --- sample digestive juice constant volume, unit are milliliter (mL)；
F --- sample extension rate；
M --- sample pipettes volume, and unit is milliliter (mL)；
1000 --- conversion coefficient.
The standard curve of embodiment 2, linear equation and coefficient correlation
Under the spectrum Mass Spectrometry Conditions of optimization, by a series of mixed standard solution 0 of various concentrations, 1,2,5,10,20,
40th, 100 μ g/L are pumped into Inductively coupled plasma mass spectrometry respectively, determine the signal response of element and internal standard element to be measured,
Using the concentration of element to be measured as abscissa, element to be measured and the ratio of selected internal standard element signal response are ordinate, are drawn
Total arsenic-total arsenic and internal standard element72The standard curve and lead-lead and internal standard element of Ge signal response ratios209Bi signals respond
It is worth the standard curve of ratio, sees Fig. 1 and Fig. 2, its linearity curve equation and coefficient correlation are shown in Table 4 and table 5.
As a result show, total arsenic is linear good in the range of 0-100 μ g/L, can meet the requirement of quantitative and qualitative analysis；Lead
It is linear good in the range of 0-100 μ g/L, the requirement of quantitative and qualitative analysis can be met.
The total arsenic element standard curve data of table 4
| Title | The range of linearity (μ g/L) | Linear equation | Coefficient correlation |
| Total arsenic | 0~100 | Y=0.008x+0.001 | 0.9999 |
The lead element standard curve data of table 5
| Title | The range of linearity (μ g/L) | Linear equation | Coefficient correlation |
| Total arsenic | 0~100 | Y=0.009x+0.001 | 1.00 |
The inventive method detection limit of embodiment 3 and quantitative limit
The detection limit and quantitative limit of the present invention uses not leaded, arsenic soy sauce and the dining table soy sauce cooked as blank sample, passes through
After pre-treatment, continuous 11 measure obtains.The detection of this programme total Arsenic in Soy Sauce is limited to：0.015mg/L, quantitatively it is limited to：
0.050mg/L, refer to table 6 below；Lead detection is limited to：0.015mg/L, quantitatively it is limited to：0.050mg/L, refer to table 7 below.
The total arsenic detection limit of table 6 and quantitative limit
The lead detection limit of table 7 and quantitative limit
The inventive method preci-sion and accuracy of embodiment 4
Using standard addition method, 0.05,0.1,0.2 3 various concentrations is added in the soy sample of not leaded, total arsenic
Horizontal standard specimen, carry out the rate of recovery and precision measure.Individually measure 10 times of each concentration level, the rate of recovery and indoor precision
Data result is shown in Table 8 and table 9.
As a result show, the preci-sion and accuracy of method is preferable, and preferably, method is reliable for repeatability, meets experiment detection
It is required that.
The As method precisions of table 8 and the degree of accuracy
The Pb method precisions of table 9 and the degree of accuracy
Compared with the present invention of embodiment 5 detects contrast with national standard
The present invention and GB 5009.11-2014《The measure of total Arsenic in Food and inorganic total arsenic》Detect dining table soy sauce, soy sauce
Compare with the Comparative result for cooking total Arsenic in Soy Sauce
Dining table soy sauce, soy sauce are detected simultaneously by the present invention and GB 5009.11-2014 and cook the arsenic in soy sauce, Liang Zhewu
Significant difference, it was demonstrated that method is accurate, reliable, refers to table 10.
The dining table soy sauce of table 10, soy sauce and cook the total arsenic testing result of two kinds of detection methods in soy sauce and compare
The present invention and GB 5009.12-2010《The measure of Pb in food》Detect dining table soy sauce, soy sauce and cook in soy sauce
The Comparative result of lead compares
Dining table soy sauce, soy sauce are detected simultaneously by the present invention and GB 5009.12-2010 and cook the lead in soy sauce, Liang Zhewu
Significant difference, it was demonstrated that method is accurate, reliable, refers to table 11.
The dining table soy sauce of table 11, soy sauce and cook the testing result of two kinds of detection method lead in soy sauce and compare
。
Claims (3)
1. the ICP-MS quick determination methods of lead in soy sauce, total arsenic are determined simultaneously, it is characterised in that comprise the following steps：
(1) sample digestion
Soy sauce sample 0.5mL accurately is pipetted, is placed in 50mL tool grinding port plug glass centrifuge tubes, is added 5mL nitric acid, be rapidly added
1mL hydrogen peroxide, gently shakes, and fully mixes, and ultrasound resolution 5-10min, is then put into and disappears in grinding port plug glass centrifuge tube
Enzymolysis auxiliary agent A, continue ultrasound resolution 15-20min, after the completion of ultrasonic, filtering；
Filtrate after filtering is placed in another 50mL tool grinding port plug glass centrifuge tubes, is put into and is disappeared in grinding port plug glass centrifuge tube
Enzymolysis auxiliary agent B, 3mL nitric acid and 1mL hydrogen peroxide are then added, is gently shaken, fully mixed, ultrasound clears up 5-15min, and ultrasound is complete
Cheng Hou, filtering, secondary deionized water or distilled water constant volume are then added, stood, determined for ICP-MS；
(2) ICP-MS instruments detect
It is internal standard element to select Ge, Bi, using icp mses operating condition, elementary analysis pattern, to be measured
The mass-to-charge ratio of element and internal standard element ginseng is respectively such as following form：
Icp mses operating condition
Note：Auxiliary gas, carrier gas, plasma gas are argon gas, and purity is more than or equal to 99.999%；
Element determination pattern
Element to be measured recommends the isotope and internal standard element of selection
。
2. detection method according to claim 1, it is characterised in that resolution auxiliary agent A is selected from hollow glass micropearl, hard charcoal
Black, pearl powder, sepiolite, fluorite, fluorination are received, one kind in ice crystal, calcite.
3. detection method according to claim 1, it is characterised in that resolution auxiliary agent B is selected from hollow glass micropearl, hard charcoal
One kind in black, diatomite, perlite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981267.7A CN107796689A (en) | 2017-10-20 | 2017-10-20 | The ICP MS quick determination methods of lead in soy sauce, total arsenic are determined simultaneously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981267.7A CN107796689A (en) | 2017-10-20 | 2017-10-20 | The ICP MS quick determination methods of lead in soy sauce, total arsenic are determined simultaneously |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107796689A true CN107796689A (en) | 2018-03-13 |
Family
ID=61534153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710981267.7A Pending CN107796689A (en) | 2017-10-20 | 2017-10-20 | The ICP MS quick determination methods of lead in soy sauce, total arsenic are determined simultaneously |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107796689A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924544A (en) * | 2021-01-25 | 2021-06-08 | 江西志浩电子科技有限公司 | Ultrasonic treatment effect detection device and circuit board production method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442694A (en) * | 2003-04-11 | 2003-09-17 | 济南市疾病预防控制中心 | Method of decomposing food sample using micro wave |
| CN103207170A (en) * | 2013-04-19 | 2013-07-17 | 华北电力大学（保定） | Method for analyzing and determining arsenic form in liquid food seasoning |
| CN105466989A (en) * | 2015-12-18 | 2016-04-06 | 浙江工业大学 | Method for electrochemical detection of lead in soy source |
| CN105866448A (en) * | 2015-04-08 | 2016-08-17 | 三峡大学 | Water quality heavy metal online monitoring instrument |
-
2017
- 2017-10-20 CN CN201710981267.7A patent/CN107796689A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442694A (en) * | 2003-04-11 | 2003-09-17 | 济南市疾病预防控制中心 | Method of decomposing food sample using micro wave |
| CN103207170A (en) * | 2013-04-19 | 2013-07-17 | 华北电力大学（保定） | Method for analyzing and determining arsenic form in liquid food seasoning |
| CN105866448A (en) * | 2015-04-08 | 2016-08-17 | 三峡大学 | Water quality heavy metal online monitoring instrument |
| CN105466989A (en) * | 2015-12-18 | 2016-04-06 | 浙江工业大学 | Method for electrochemical detection of lead in soy source |
Non-Patent Citations (1)
| Title |
|---|
| 汪晓冬: "微波消解-电感耦合等离子质谱法对8种市售酱油无机元素的分析", 《食品研究与开发》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924544A (en) * | 2021-01-25 | 2021-06-08 | 江西志浩电子科技有限公司 | Ultrasonic treatment effect detection device and circuit board production method |
| CN112924544B (en) * | 2021-01-25 | 2023-06-09 | 江西志浩电子科技有限公司 | Ultrasonic treatment effect detection device and circuit board production method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW201637577A (en) | Sporoderm-breaking method for ganoderma spore powder and products obtained by the same | |
| CN107421932B (en) | Utilize the method for nitrogen phosphorus doping carbon quantum dot probe in detecting Cr VI | |
| CN107556472B (en) | The covalent organic porous polymer material of hollow/solid controllable spherical of one kind, Preparation method and use | |
| CN106634978A (en) | A method of preparing fluorescent carbon dots by adopting waste sugarcane molasses as a raw material and application of the fluorescent carbon dots | |
| CN108452780B (en) | It is a kind of selectively to fix selenous adsorbed film and preparation method thereof | |
| CN107739418A (en) | A kind of method that chitosan oligosaccharide is prepared using papain freeze-drying | |
| CN101045720A (en) | Method for extracting buckwheat flavone from buckwheat shell | |
| CN107290311A (en) | A kind of fluorescent optical sensor " opening pass " detects ascorbic method | |
| CN107173810A (en) | A kind of method that tannin, polysaccharide and Chestnut shell pigment are extracted from chestnut shell | |
| CN104291333A (en) | Method for preparing stone coal based mesoporous activated carbon with high specific surface area | |
| CN104087533B (en) | A kind of microbial bacterial agent of naval vessels boats and ships changing food waste of degrading and preparation method thereof | |
| CN101735234B (en) | Preparation process for obtaining high purity sesamin from sesame cake meal | |
| EP0101398A1 (en) | Method of concentrating and measuring unicellular organisms | |
| CN107796689A (en) | The ICP MS quick determination methods of lead in soy sauce, total arsenic are determined simultaneously | |
| CN113632994A (en) | Method for improving soluble dietary fiber of roxburgh rose pomace | |
| CN106620067A (en) | Method for extracting pineapple peel flavonoid compound | |
| Yong-Guang et al. | Study on ultrasonic-assisted extraction of polysaccharide of Atractylis macroceohala koidz of experiment | |
| CN105193867B (en) | A kind of ganoderma lucidum spore oil and preparation method thereof rich in ergosterol | |
| CN104798981A (en) | Method for preparing feather protein powder from alkaline protease/keratinase | |
| CN115433366B (en) | Hydrogen bond organic framework nano-sheet and preparation method and application thereof | |
| CN109384857B (en) | Process for extracting ganoderan from ganoderma lucidum fruiting body | |
| CN107383224A (en) | The extraction of aloe polysaccharides in aloe and assay method | |
| CN105166320A (en) | Preparation method of peanut protein oligosaccharide | |
| CN103494850B (en) | Process for extracting and purifying total organic acid of aralia cordata | |
| CN108642125A (en) | A kind of inositol quantitative detecting method based on microwell plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180313 |