Evaluation of an improved closed-vessel conductively heated digestion system for the analysis of raw meat samples by ICP techniques†,Journal of Analytical Atomic Spectrometry

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Evaluation of an improved closed-vessel conductively heated digestion system for the analysis of raw meat samples by ICP techniques†
Journal of Analytical Atomic Spectrometry ( IF 3.1 ) Pub Date : 2018-06-25 00:00:00 , DOI: 10.1039/c8ja00121a
Alan Lima Vieira _{1,

2,

3,

4} , Kelber Miranda _{4,

5,

6} , Alex Virgilio _{1,

2,

3,

4} , Edilene Cristina Ferreira _{1,

2,

3,

4} , José Anchieta Gomes Neto _{1,

2,

3,

4}

Affiliation

In this work, an improved conductively heated digestion system (CHDS) with closed vessels, which provides simpler, easier and safer digestion of raw chicken, beef and pork meat samples aiming at Ca, Cu, Fe, K, Mg, Mn, Na, P, S, and Zn determinations by ICP OES and As, Cd, Cr, Mo, Pb and Se by ICP-MS/MS was evaluated. For purposes of safety, easy operation, and analytical performance, a novel polytetrafluoroethylene lid with a screw valve which enables pressure relief without touching the pressurized vessel at the end of the digestion was developed for the CHDS vessels. The accuracy was checked by the analysis of three meat certified reference materials (CRMs) and the results obtained for the CHDS were compared to those of microwave-assisted digestion (MW). Blank values and carbon contents in digested samples using the CHDS were comparable to those of MW, being adequate for ICP OES and ICP-MS techniques. The recoveries for the analytes in the three CRMs varied from 85 to 110% when using the CHDS. The results found by the proposed CHDS were in agreement with those obtained by the MW comparative procedure. The limit of quantification (LOQ) values for the CHDS may be considered comparable to those of MW and adequate for raw meat analysis. The CHDS is an interesting alternative for macronutrients, micronutrients, and contaminants, and highlighted mainly the volatile elements (As, Cd, Pb and Se), which could be easily lost with open-vessel digestion systems.

中文翻译：

通过ICP技术评估改进的密闭容器传导加热消解系统以分析生肉样品†

在这项工作中，采用了封闭容器的改进的电导加热消解系统（CHDS），该消解系统可针对Ca，Cu，Fe，K，Mg，Mn，Na，通过ICP OES测定P，S和Zn，通过ICP-MS / MS对As，Cd，Cr，Mo，Pb和Se进行评估。为了安全，易于操作和分析性能，针对CHDS容器开发了一种新型的带有螺纹阀的聚四氟乙烯盖，该盖能够在消解结束时不接触压力容器而释放压力。通过分析三种通过肉类认证的参考材料（CRM）来检查准确性，并将CHDS获得的结果与微波辅助消化（MW）的结果进行比较。使用CHDS消解后的样品中的空白值和碳含量与MW相当，足以用于ICP OES和ICP-MS技术。使用CHDS时，三种CRM中分析物的回收率从85％到110％不等。拟议的CHDS发现的结果与MW比较程序获得的结果一致。CHDS的定量限（LOQ）值可被认为与MW相当，并且足以进行生肉分析。CHDS是一种可替代大量营养素，微量营养素和污染物的有趣替代品，并且主要突出了挥发性元素（As，Cd，Pb和Se），这些元素在开放式容器消化系统中很容易丢失。拟议的CHDS发现的结果与MW比较程序获得的结果一致。CHDS的定量限（LOQ）值可被认为与MW相当，并且足以进行生肉分析。CHDS是一种可替代大量营养素，微量营养素和污染物的有趣替代品，并且主要突出了挥发性元素（As，Cd，Pb和Se），这些元素在开放式容器消化系统中很容易丢失。拟议的CHDS发现的结果与MW比较程序获得的结果一致。CHDS的定量限（LOQ）值可被认为与MW相当，并且足以进行生肉分析。CHDS是一种可替代大量营养素，微量营养素和污染物的有趣替代品，并且主要强调了挥发性元素（As，Cd，Pb和Se），这些元素在开放式容器消化系统中很容易丢失。

更新日期：2018-06-25

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