CN105911234A - Determination method for chromium content of Guiling jelly - Google Patents
Determination method for chromium content of Guiling jelly Download PDFInfo
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- CN105911234A CN105911234A CN201610229839.1A CN201610229839A CN105911234A CN 105911234 A CN105911234 A CN 105911234A CN 201610229839 A CN201610229839 A CN 201610229839A CN 105911234 A CN105911234 A CN 105911234A
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- chromium content
- guiling gao
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/02—Food
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- General Health & Medical Sciences (AREA)
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention provides a determination method for the chromium content of Guiling jelly, and aims to provide a method characterized by simplicity, accurate detection result and no need of large instrument for determination of the chromium content of Guiling jelly. The technical scheme consists of: 1) preparation of a standard solution; 2) pretreatment of a sample; 3) sample digestion; and 4) determination. The method belongs to the technical field of chemical detection.
Description
Technical field
The invention discloses the assay method of a kind of chromium content, specifically, be a kind of method measuring chromium constituent content；
Belong to technical field of chemical detection.
Background technology
GUILING GAO powder is the time-honored Traditional health care in Wuzhou, Guangxi food, its warm in nature and, the coolest the driest, there is heat clearing away and go
Wet, prosperous blood granulation promoting, loosening bowel to relieve constipation, skin care such as is refreshed oneself at the effect, all-ages, thus extremely people like, and World-wide Sale.Testudinis Siberian cocklebur
Cream powder with Carapax et Plastrum Testudinis, bean jelly (starch, Herba mesonae chinensis extracting solution), Radix Angelicae Sinensis, Rhizoma Smilacis Glabrae, Radix Glycyrrhizae, Flos Lonicerae and Herba Taraxaci as primary raw material
It is made, also can be equipped with the Chinese crude drugs such as Flos Chrysanthemi, Folium Eriobotryae, Fructus Momordicae and make the product that a series of taste is different with function, cater to
The taste of consumer groups.
Summary of the invention
It is an object of the invention to provide a kind of detection method simple, testing result is accurate, without using the survey of large-scale instrument
Determine the method for chromium content in GUILING GAO.
For solving above-mentioned technical problem, the technical scheme that the present invention provides is such that
A kind of measuring the method for chromium content in GUILING GAO, its assay method comprises the steps: successively
1) preparation of standard solution:
Draw Cr standard solution, with the nitric acid that volume fraction is 1% be configured to Cr concentration be 0.0,50.0,100.0,
200.0,300.0, the standard solution of 400.0ng/ml；
2) pretreatment of sample
GUILING GAO sample blender blends, standby；
3) the clearing up of sample:
Weigh GUILING GAO sample 5～10g in porcelain crucible, crucible is placed on electric furnace, is evaporated, carbonization, it is transferred to high temperature
In stove, 550 DEG C of more than constant temperature 2h；After taking-up, cooling, add in 5ml concentrated nitric acid sample ash in crucible, crucible is placed in electric furnace
On, it is evaporated, then proceeds in 550 DEG C of high temperature furnaces, continue ashing 1～2h, be white lime shape to sample；Cooling is taken out from high temperature furnace
After, with nitric acid dissolved samples ash, solution is moved in 50ml volumetric flask, fully mix after constant volume, be test liquid；Meanwhile, press
Said method does blank；
4) measure
Start, adjusts instrument plasma flow 15.0L/min, auxiliary flow 0.2L/min, nebulizer flow 0.80L/
Min, radio-frequency power 1300W, sample flow 1.50L/min, observed range 15.0 axial observation plasma reads parameter temporal 5
～20S, reagent blank, standard series, sample solution are introduced instrument respectively, by computer drawing standard curve, calculates and return
Equation, draws the concentration of sample solution.
Further, above-mentioned a kind of measuring the method for chromium content in GUILING GAO, Cr concentration is 1000 μ g/ml.
Further, above-mentioned a kind of the method for chromium content in GUILING GAO, the concentration of described Cr standard solution are measured
It is 10 μ g/ml.
Further, above-mentioned a kind of measure the method for chromium content, step 3 in GUILING GAO) described in nitric acid volume fraction
It is 1%.
Compared with prior art, element Cr in GUILING GAO is measured by the technical scheme that the present invention provides, detection method letter
Single, testing result accurately, without using the method for chromium content in the mensurations GUILING GAO of large-scale instrument, be conducive to raising product matter
Amount.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the claim of the present invention is described in further detail, but do not constitute right
Any restriction of the present invention, the amendment of any limited number of time made at the claims in the present invention protection domain, still the present invention's
Within claims.
Embodiment 1
1, reagent
Concentrated nitric acid
The nitric acid (volume fraction) of 1%
Standard reserving solution: Cr (C=1000 μ g/ml)
Standard solution: Cr (C=10 μ g/ml)
2, instrument condition
3, experimental technique
(1), the preparation of standard solution: draw each standard solution, be configured to the nitric acid of 1%, Cr concentration is 0.0,
50.0,100.0,200.0,300.0, the standard solution of 400.0ng/ml；
(2), the pretreatment of sample: GUILING GAO sample blender blends, standby.
(3), the clearing up of sample: weigh GUILING GAO sample 5～10g in porcelain crucible, crucible is placed on electric furnace, carefully steams
Dry, carbonization, to not smoldering, is transferred in high temperature furnace, 550 DEG C of more than constant temperature 2h.Take out, cooling after, add 5ml concentrated nitric acid in
In sample ash in crucible, crucible is placed on electric furnace, is carefully evaporated, then proceed in 550 DEG C of high temperature furnaces, continue ashing 1～2h,
It is white lime shape to sample.After taking out cooling from high temperature furnace, with nitric acid (volume fraction is 1%) dissolved samples ash, solution is moved
Enter in 50ml volumetric flask, fully mix after constant volume, be test liquid.Meanwhile, blank is done as stated above.
4, measure
Start, when instrument vacuum reaches requirement, adjusts instrument indices, makes instrumental sensitivity, resolution etc. each
After item index reaches requirement, edit assay method.Reagent blank, standard series, sample solution are introduced instrument respectively, by calculating
Standard curve drawn by machine, calculates regression equation, draws the concentration of sample solution.
In order to better illustrate advantages of the present invention, be given below the present invention provide several groups of method detection data:
Table one: the comparison of each sampling amount
| Sampling amount (g) | 1.0 | 5.0 | 10.0 | 15.0 | 20.0 |
| Cr(mg/kg) | 0.294 | 0.335 | 0.328 | 0.309 | 0.314 |
Note: each sampling amount is all settled to 50ml.
Table two: each element range of linearity
| Element | μg/L |
| Cr | 0～200 |
Table three: each detection limits
| Element | μg/L |
| Cr | 3.5 |
Table four: the recovery of standard addition of each sample
Claims (4)
1. one kind measures the method for chromium content in GUILING GAO, it is characterised in that its assay method comprises the steps: successively
1) preparing standard solution:
Draw Cr standard solution, with the nitric acid that volume fraction is 1% be configured to Cr concentration be 0.0,50.0,100.0,200.0,
300.0, the standard solution of 400.0ng/ml；
2) pretreatment of sample
GUILING GAO sample blender blends, standby；
3) the clearing up of sample:
Weigh GUILING GAO sample 5～10g in porcelain crucible, crucible is placed on electric furnace, is evaporated, carbonization, it is transferred in high temperature furnace,
550 DEG C of more than constant temperature 2h；After taking-up, cooling, add in 5ml concentrated nitric acid sample ash in crucible, crucible is placed on electric furnace, steam
Dry, then proceed in 550 DEG C of high temperature furnaces, continue ashing 1～2h, be white lime shape to sample；After taking out cooling from high temperature furnace, use nitre
Acid dissolved samples ash, moves into solution in 50ml volumetric flask, fully mixes after constant volume, be test liquid；Meanwhile, as stated above
Do blank；
4) measure
Start, adjustment instrument plasma flow 15.0L/min, auxiliary flow 0.2L/min, nebulizer flow 0.80L/min,
Radio-frequency power 1300W, sample flow 1.50L/min, observed range 15.0 axial observation plasma read parameter temporal 5～
20S, introduces instrument respectively by reagent blank, standard series, sample solution, by computer drawing standard curve, calculates recurrence side
Journey, draws the concentration of sample solution.
The method of a kind of chromium constituent content simultaneously measured in GUILING GAO the most according to claim 1, it is characterised in that institute
The Cr standard reserving solution concentration stated is 1000 μ g/ml.
The most according to claim 1 a kind of measure the method for chromium content in GUILING GAO, it is characterised in that described Cr standard
The concentration using liquid is 10 μ g/ml.
The most according to claim 1 a kind of measure the method for chromium content in GUILING GAO, it is characterised in that step 3) described in
Nitric acid volume fraction is 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610229839.1A CN105911234A (en) | 2016-04-14 | 2016-04-14 | Determination method for chromium content of Guiling jelly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610229839.1A CN105911234A (en) | 2016-04-14 | 2016-04-14 | Determination method for chromium content of Guiling jelly |
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| CN201610229839.1A Pending CN105911234A (en) | 2016-04-14 | 2016-04-14 | Determination method for chromium content of Guiling jelly |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202649120U (en) * | 2012-06-26 | 2013-01-02 | 广东省潮州市质量计量监督检测所 | Food detecting system |
| CN103940897A (en) * | 2014-05-13 | 2014-07-23 | 广州金域医学检验中心有限公司 | Method for determining traces of mercury, cadmium, lead and arsenic in food by inductively coupled plasma mass spectrometry (ICP-MS) |
-
2016
- 2016-04-14 CN CN201610229839.1A patent/CN105911234A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202649120U (en) * | 2012-06-26 | 2013-01-02 | 广东省潮州市质量计量监督检测所 | Food detecting system |
| CN103940897A (en) * | 2014-05-13 | 2014-07-23 | 广州金域医学检验中心有限公司 | Method for determining traces of mercury, cadmium, lead and arsenic in food by inductively coupled plasma mass spectrometry (ICP-MS) |
Non-Patent Citations (7)
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| 刘晓等: "ICP-AES法检测硫磺熏蒸前后金银花中金属元素及微量元素", 《中成药》 * |
| 刘素华等: "电感耦合等离子体原子发射光谱法测定食品中铅、镉、铬、镍的方法研究", 《预防医学论坛》 * |
| 孙玲玲等: "海带中12 种元素ICP-OES 检测的三种前处理方法对比研究", 《海洋科学》 * |
| 李明等: "《化学设计创新实验》", 28 February 2014, 云南大学出版社 * |
| 武国华等: "原子吸收光谱法在中草药微量元素及重金属分析中的应用", 《江苏科技大学学报( 自然科学版)》 * |
| 武志杰等.: "《农产品安全生产原理与技术》", 31 January 2006, 中国农业科学技术出版社 * |
| 陈阳等: "电感耦合等离子体发射光谱法在国内药物分析中的应用现状", 《药物分析杂志》 * |
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