LC-ICP-MS测定食用昆虫中砷的种类。

IF 1.7 4区 农林科学 Q3 CHEMISTRY, ANALYTICAL
Eri Matsumoto, Makoto Matsumoto
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引用次数: 0

摘要

背景:可食用昆虫可能含有砷。为了准确评估砷暴露,有必要对砷的种类进行分析。目的:建立一种测定食用昆虫中砷含量的分析方法。方法:以食用昆虫为原料,在100℃、0.3 mol/L硝酸。然后通过LC电感耦合等离子体质谱法(LC-ICP-MS)使用十八烷基硅烷(ODS)柱和含有离子对试剂的流动相来测定砷物种的浓度。结果:检出限(0.007-0.012 mg/kg)、LOQ(0.021-0.038 mg/kg)、重复性(1.2-3.2%)、中间精密度(2.8-4.5%)和真实性(基于加标样品的回收率97-102%)对可食用昆虫中的无机砷、二甲基亚砷酸(DMA)和砷酸(AB)是令人满意的。在日本获得的所有样本(亚洲林蝎、潜水甲虫、巨型水虫、蚱蜢、六月甲虫、鼹鼠蟋蟀、雄犀甲虫、雌犀甲虫,西米虫和蚕蛹)中都检测到了总砷,主要由无机砷组成。尤其是甲壳虫表现出相对较高的水平。结论:不同食用昆虫的砷含量不同。饲料控制很重要,因为可食用昆虫体内的砷浓度可能依赖于饲料。亮点:使用ODS柱和含有离子对试剂的流动相,通过LC-ICP-MS分析可食用昆虫中的砷物种。大多数样品中都检测到无机砷,其浓度从
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Determination of Arsenic Species in Edible Insects by LC-ICP-MS.

Background: Edible insects may contain arsenic. Analysis of arsenic species is necessary in order to accurately assess arsenic exposure.

Objective: An analytical method was validated and used to determine and quantitate arsenic species in edible insects.

Methods: Arsenic species were extracted from edible insects by heating at 100°C in 0.3 mol/L nitric acid. The concentration of arsenic species was then determined by LC-inductively coupled plasma-mass spectrometry (LC-ICP-MS) using an octadecylsilane (ODS) column with a mobile phase containing an ion-pair reagent.

Results: The LOD (0.007-0.012 mg/kg), LOQ (0.021-0.038 mg/kg), repeatability (1.2-3.2%), intermediate precision (2.8-4.5%), and trueness (recoveries 97-102% based on spiked samples) of the proposed method were satisfactory for inorganic arsenic, dimethylarsinic acid (DMA), and arsenobetaine (AB) in edible insects. Total arsenic was detected in all samples obtained in Japan (Asian forest scorpion, diving beetles, giant water bug, grasshoppers, June beetles, mole crickets, male rhino beetle, female rhino beetle, sago worms, and silkworm pupae) and consisted of mostly inorganic arsenic. Beetles in particular showed relatively high levels.

Conclusion: Arsenic content varies among edible insect species. Feed control is important, as arsenic concentrations in edible insects may be feed dependent.

Highlights: Arsenic species in edible insects were analyzed by LC-ICP-MS using an ODS column with a mobile phase containing an ion-pair reagent. Inorganic arsenic was detected in most samples, with concentrations ranging from <0.04 to 29.3 mg/kg.

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来源期刊
Journal of AOAC International
Journal of AOAC International 医学-分析化学
CiteScore
3.10
自引率
12.50%
发文量
144
审稿时长
2.7 months
期刊介绍: The Journal of AOAC INTERNATIONAL publishes the latest in basic and applied research in analytical sciences related to foods, drugs, agriculture, the environment, and more. The Journal is the method researchers'' forum for exchanging information and keeping informed of new technology and techniques pertinent to regulatory agencies and regulated industries.
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