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Method for determining trace mercury in artemisia selengensis

A kind of Artemisia annua, trace technology, applied in the field of analysis and testing, can solve problems such as Artemisia annua contamination, and achieve the effect of reliable monitoring and good stability

Inactive Publication Date: 2013-01-30
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] But Artemisia quinoa can also be polluted by harmful substances, such as the heavy metal mercury

Method used

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  • Method for determining trace mercury in artemisia selengensis
  • Method for determining trace mercury in artemisia selengensis
  • Method for determining trace mercury in artemisia selengensis

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Reagent:

[0037] (1) 5g / L NaOH: Weigh 5.00g NaOH, dissolve in water, dilute to 1000mL, and mix well.

[0038] (2) NaBH 4 Concentration series (1g / L, 4g / L, 5 g / L, 6 g / L, 7 g / L, 8 g / L, 10 g / L) configuration: weigh 0.25g, 1.00g, 1.25g respectively , 1.50g, 1.75g, 2.00g, 2.50g NaBH 4 In a 100mL beaker, dissolve with 5 g / L NaOH solution, set the volume to the mark on the 250mL volumetric flask, and mix well.

[0039] (3) 6 g / L NaBH 4 : Weigh 6.00g NaBH 4 In a 100mL beaker, dissolve with 5 g / L NaOH solution, dilute to 1000mL, and mix well.

[0040] (4) Configuration of HCl series concentrations (1%, 3%, 4%, 5%, 6%, 7%, 10%, 15%): measure 2.5mL, 7.5mL, 10.0mL, 12.5mL, 15.0 mL, 17.5mL, 25.0mL, 37.5mL concentrated HCl in a 250 mL volumetric flask, dilute with water, cool to volume, and mix well.

[0041] (5) 6% HCl: Measure 60 mL of concentrated HCl, dilute to 1000 mL with water, and mix well.

[0042] (6) Nitric acid conditioning solution is HNO 3 (1+9): Measure 100mL...

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PUM

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Abstract

The invention relates to a method for determining trace mercury in artemisia selengensis, and belongs to the field of analytical test. According to the method, artemisia selengensis is pre-treated, and is placed in a microwave digestion tank according to conditions to carry out digestion, and mercury content is determined under the following conditions that: a carrier liquid HCl concentration is 6%, a reducing agent NaBH4 concentration is 6 g / L, a negative high voltage is 300 V, a lamp current is 30 mA, an atomizer height is 10 mm, a carrier gas flow rate is 4000 mL / min, and a reading time is 11 s. The method has characteristics of high stability and sensitive reaction.

Description

technical field [0001] The invention belongs to the field of analysis and testing, and relates to a method for measuring trace mercury in Artemisia arvensis. Background technique [0002] Artemisia selengensis, also known as Artemisia selengensis, Artemisia selengensis, is the only perennial aquatic herb in the genus Artemisia in the Asteraceae family. The underground stems are thick and white, the aboveground stems are straight and purplish red, the leaves are generally pinnatifid, and the flowers are yellow. It is distributed in Northeast my country, North China, Central China and other places. Artemisia quinoa produced in Poyang Lake, Jiangxi is the most famous, known as "the grass of Poyang Lake, the treasure of Nanchang people". The advantages of Artemisia quinoa are mainly reflected in the following aspects: [0003] 1. In terms of food: the tender stems of Artemisia quinoa have become a delicacy due to their unique fragrance and crispness. There are fried bacon with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 潘军辉欧阳崇学陶福华
Owner NANCHANG UNIV
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