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Method for measuring lead and arsenic in triacetin and digestion equipment of method

A technology of triacetin and equipment, applied in the field of determination of lead, arsenic in triacetin and digestion equipment thereof, can solve problems such as difficult reference implementation, insufficient disclosure of technological process and process parameters, etc., and achieve measurement results Small error, easy operation, accurate test effect

Inactive Publication Date: 2016-05-04
NANTONG CIGARETTE FILTER
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  • Abstract
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Problems solved by technology

The invention has not fully disclosed the relevant process and process parameters, and it is not easy to refer to it for implementation

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  • Method for measuring lead and arsenic in triacetin and digestion equipment of method
  • Method for measuring lead and arsenic in triacetin and digestion equipment of method

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[0041] The method for measuring lead and arsenic in glycerol triacetate of the present invention has the following process steps: respectively preparing arsenic and lead standard working solutions; adopting a digestion device of a microwave digestion instrument for sample processing; adopting a graphite furnace atomic absorption spectrometer to measure arsenic The operating conditions were set separately for the lead content; the graphite furnace atomic absorption spectrometer was used to measure the content of arsenic and lead in the sample respectively. in,

[0042] 1) In the separate preparation of arsenic and lead standard working solutions, the concentration range of multiple arsenic and lead standard working solutions prepared separately should cover the content of arsenic and lead elements expected to be detected in the sample.

[0043] 2) During the sample processing of the digestion equipment, the temperature is raised from room temperature to 95-105°C for 4-6 minutes...

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Abstract

The invention provides a method for measuring lead and arsenic in triacetin and digestion equipment of the method. The method comprises the following processing steps that preparation of lead and arsenic standard working solutions; sample treatment of the digestion equipment; setting of operating conditions during measurement of a graphite furnace atomic absorption spectrometer; measuring of the lead and arsenic contents respectively. The digestion equipment is a microwave digestion instrument. The method can measure the lead and arsenic contents in the triacetin rapidly and accurately, and the operation is simple, convenient and safe.

Description

technical field [0001] The invention relates to a method and equipment for determining trace metal elements in glycerol triacetate. Background technique [0002] At present, the tobacco industry at home and abroad generally uses glycerol triacetate as a plasticizer in filter rods, and its quality has a significant impact on the safety and taste of cigarette products. ), the determination methods for lead and arsenic in glycerol triacetate have been stipulated, namely "GB / T5009.75 Determination of lead in food additives" and "GB / T5009.76 Determination of arsenic in food additives". [0003] In the daily detection of lead and arsenic in glyceryl triacetate, it was found that the traditional detection method needs to use a wide variety of reagents, some of which are highly toxic (potassium cyanide), and the operation steps are cumbersome, and the detection efficiency is not high. [0004] The invention with the patent application number of 201310331837X belongs to the alloy tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N1/40
CPCG01N21/3103G01N1/4044
Inventor 朱鲜艳盛培秀徐兴华
Owner NANTONG CIGARETTE FILTER
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