Ultrasonic assisted HPLC-ICP-MS detecting and analyzing method for different arsenic form component content in complementary foods for infants

Abstract

The invention discloses an ultrasonic assisted HPLC-ICP-MS detecting and analyzing method for different arsenic form component content in complementary foods for infants. The method comprises the following steps: 1) after the to-be-detected sample of complementary foods for infants is pretreated, extracting by using a methanol aqueous solution and an enzyme solution to obtain a to-be-measured liquid; 2) separating different arsenic form components of the to-be-detected liquid by using high performance liquid chromatography; and 3) measuring different arsenic form components by using the CCT mode of ICP-MS. According to the ultrasonic assisted HPLC-ICP-MS detecting and analyzing method for different arsenic form component content in complementary foods for infants, an arsenic form liquid chromatography-inductively coupled plasma mass spectrometry combined analysis method is established, the extracting method and chromatographic conditions of the arsenic form in various types of complementary foods for infants are optimized. The method is suitable for actual detection of various types of complementary foods for infants and has the advantages of being efficient, fast, accurate and thelike.

Description

technical field [0001] The invention relates to the technical field of detection and analysis of complementary foods for infants, in particular to an ultrasonic-assisted HPLC-ICP-MS detection and analysis method for the content of different arsenic components in complementary foods for infants. Background technique [0002] Supplementary food for infants is a food that must be added during the growth and development of infants (from about 6 months old) to ensure the daily nutritional intake, but it is also an important way for infants to be exposed to heavy metal pollution. The raw materials of cereal supplementary foods for infants and young children are rice or oats, etc., which have different degrees of enrichment for heavy metals in the soil, especially rice, which is about 10 times higher than barley or wheat in arsenic enrichment capacity; It is animal-derived muscle or fish and shrimp in water, and it also has a strong enrichment effect on heavy metals in the environm...

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