[用电感耦合等离子体质谱法测定面粉和谷类产品中有毒元素的浓度]。

Q2 Medicine
N V Zaitseva, T S Ulanova, K O Gileva, G A Veikhman, E V Stenno, A V Nedoshitova, M V Volkova
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引用次数: 0

摘要

在为人口提供卫生流行病学福利方面的系统控制和监测需要常规程序来确定各种食品中的有毒元素。他们的发展是一个紧迫的问题。我们的研究目的是建立一种用电感耦合等离子体质谱法测定面粉和谷类产品中砷、镉、铅、汞、铝和锶浓度的方法。材料和方法。建立了Agilent 7900八脚碰撞/反应池质谱仪最相关的标定参数和微波消解制样条件;已确定了校准特性和测定浓度范围。计算了6种分析元素的检出限和定量限。结果。我们用电感耦合等离子体质谱法测定面粉和谷类产品中砷、镉、铅、汞、铝和锶的质量浓度的方法得出了以下结果:当分析0.5 g的样品时,我们测定的镉浓度范围为0.0008至70.0 mg/kg,准确度为14%至25%;砷浓度在0.002 ~ 70mg /kg范围内,误差在11% ~ 26%之间;汞浓度为0.003至7.0 mg/kg,误差为15%至25%;铅浓度范围为0.01 ~ 70.0 mg/kg,误差范围为12% ~ 26%;铝浓度为0.2 ~ 70.0 mg/kg,误差为13% ~ 20%;锶浓度为0.02 ~ 70mg /kg,误差为12% ~ 20%。该程序在米糠样品上进行了测试,重点是最受欢迎的品牌。因此,在圆粒米中检测到的砷浓度为0.163毫克/公斤,在半熟米中检测到的砷浓度为0.098毫克/公斤,不超过该元素的允许含量0.2毫克/公斤。在所有分析的样品中,镉、铅和汞的含量均未超过关税同盟TR CU 021/2011关于面粉和谷物产品的技术法规规定的最大允许水平。镉为0.1毫克/公斤,铅为0.5毫克/公斤,汞为0.03毫克/公斤。结论。采用电感耦合等离子体质谱法测定面粉、谷物和烘焙产品中有毒元素的开发程序,使测定这些元素的数量低于技术法规和卫生规则规定的允许水平。该程序扩大了俄罗斯联邦现有的有条理的食品质量控制工具。
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 toxic element concentrations in flour and cereal products by mass spectrometry with inductively coupled plasma].

Systemic control and monitoring in the sphere of providing sanitary epidemiological welfare of population require routine procedures for determining toxic elements in variable foodstuffs. Their development is a pressing issue. Our research goal was to develop a procedure for determining concentrations of arsenic, cadmium, lead, mercury, aluminum and strontium in flour and cereal products by mass spectrometry with inductively coupled plasma. Material and methods. The most relevant calibration parameters for an Agilent 7900 mass spectrometer with octopole collision/ reaction cell and conditions for sample preparation by microwave digestion have been established; calibration characteristics and a range of determined concentrations have been identified. The limits of detections (LOD) and limits of quantification (LOQ) for 6 analyzed elements have been calculated. Results. Our procedure for determining mass concentrations of arsenic, cadmium, lead, mercury, aluminum and strontium in flour and cereal products by mass spectrometry with inductively coupled plasma has yielded the following results: when analyzing a sample weighing 0.5 g, we determine cadmium concentration within a range from 0.0008 to 70.0 mg/kg with inaccuracy from 14 to 25%; arsenic concentration within a range from 0.002 to 70 mg/kg with inaccuracy varying from 11 to 26%; mercury concentration from 0.003 to 7.0 mg/kg with inaccuracy from 15 to 25%; lead concentration from 0.01 to 70.0 mg/kg with inaccuracy from 12 to 26%; aluminum concentration from 0.2 to 70.0 mg/kg with inaccuracy from 13 to 20%; strontium concentration from 0.02 to 70 mg/kg with inaccuracy from 12 to 20%. The procedure was tested on samples of rice groats with the focus on the most popular brands. Thus, arsenic was detected in a concentration equal to 0.163 mg/kg in round-grain rice and 0.098 mg/kg in parboiled rice, which does not exceed the permissible level fixed for the element at 0.2 mg/kg. In all the analyzed samples, content of cadmium, lead and mercury did not exceed maximum permissible levels established by the Technical regulation of the Customs Union TR CU 021/2011 for flour and cereal products. These levels are 0.1 mg/kg for cadmium, 0.5 mg/kg for lead and 0.03 mg/kg for mercury. Conclusion. The developed procedure for determining toxic elements in flour, cereals and bakery products by using mass spectrometry with inductively coupled plasma gives an opportunity to determine such elements in quantities lower than permissible levels fixed for them in technical regulations and sanitary rules. The procedure expands the existing methodical instruments for control of food quality in the Russian Federation.

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Voprosy pitaniia
Voprosy pitaniia Medicine-Medicine (all)
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