A direct and in situ digestion technique is reported for electrothermal atomic absorption spectrometric analysis of Cd in dairy products. In situ digestion methods offered high sensitivity due to the absence of sample dilution andminimum risk of contamination or analyte loss. Under optimized conditions, the calibration graph was linear in the range of 0–5 ng/mL, with a limit of detection of 0.012 ng/mL. The method was successfully applied in dairy product samples including milks, yogurt, and milk beverages, with spiked recoveries of 91 to 111%. The accuracy of the proposed method was also validated by wet digestion-based method.

中文翻译：

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使用化学改性剂和提高热解温度进行乳制品中镉的高灵敏度光谱测定

据报道，直接和原位消化技术用于乳制品中镉的电热原子吸收光谱分析。原位消解方法由于没有样品稀释和污染或分析物损失的最小风险而具有很高的灵敏度。在最佳条件下，校正图在0-5 ng / mL范围内呈线性，检出限为0.012 ng / mL。该方法已成功应用于包括牛奶，酸奶和牛奶饮料在内的乳制品样品，加标回收率为91％至111％。还通过基于湿消化的方法验证了该方法的准确性。