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- Title
超级微波消解■石墨炉原子吸收 光谱法测定虾虫古中镉含量.
- Authors
曹静; 汪浩; 張晶晶
- Abstract
A method for the rapid determination of squilla cadmium was established-The certified reference material of squilla was digested by super microwave and ordinary microwave respectively to compare the effect of digestion and select the preferred digestion method. The sample solution was determined by graphite furnace atomic absorption spectrometry, instrument parameters included matrix modifier, ashing temperature was examined, and the optimum method conditions were determined, the accuracy of the method was confirmed by the standard addition recovery test・ The results measured by the two digestion methods were within the range of reference values, under the selected conditions, the linear range of cadmium was 0-2. 0 卩g/L with 999 4, the detection limit of the method was 0. 04 yg/L with a limit of quantitation 0. 12 tg/L・ The recovery was in the range of 88-5 %-105 % with precision in the range of 2.9 %--4.9%. Super microwave digestion has obvious advantages compared with ordinary micro wave digestion. The method is efficient, convenient, accurate, and with less acid consumption. It can be easily promoted at the grass-roots level, which is suitable for cadmium pollution monitoring of batch squilla samples.
- Subjects
FURNACE atomic absorption spectroscopy; POLLUTION monitoring; DETECTION limit; REFERENCE values; REFERENCE sources; CADMIUM; GRAPHITE
- Publication
Chinese Journal of Inorganic Analytical Chemistry / Zhongguo Wuji Fenxi Huaxue, 2023, Vol 13, Issue 4, p299
- ISSN
2095-1035
- Publication type
Article
- DOI
10.3969/j.issn.2095-1035.2023.04.001