Determination of Nine Hazardous Elements in Textiles by Inductively Coupled Plasma Optical Emission Spectrometer after Microwave-Assisted Dilute Nitric Acid Extraction
CHEN Fei1, 2, XU Dian-dou2*, TANG Xiao-ping3, CAO Jing1，LIU Ya-ting1, DENG Jian1*
1. School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China 2. Key Laboratory of Nuclear Analytical Techniques, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China 3. Technical Center of Beijing Entry-Exit Inspection and Quarantine Bureau, Beijing 100094, China
Abstract：Textiles are easily contaminated by heavy metals in the course of processing. In order to monitor the quality of textiles, a new method was developed for simultaneous determination of arsenic, antimony, lead, cadmium, chromium, cobalt, copper, nickel and mercury in textiles by inductively coupled plasma optical emission spectrometry (ICP-OES) after microwave-assisted dilute nitric acid extraction. After optimizing extraction conditions, we ultimately selected 5% nitric acid as extractant and 5 min as extraction time with the extraction temperature of 120 ℃ and instrument power of 400W in the microwave-assisted extraction procedure. Nine hazardous elements were detected sequentially by ICP-OES. The results showed that the detection limits were 0.3～15 μg·L-1 and the recoveries 73.6%～105% with the RSDs (n=3) of 0.1%～3%. The proposed method was successfully used to determine nine elements in cotton, wool, terylene and acrylic.
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