摘要
目的采用电感耦合等离子体原子发射光谱法(ICP-AES)和电感耦合等离子体质谱法(ICP-MS)测定食品接触材料(纸、再生纤维)中的硼酸盐。方法样品经湿法消化或酸浸泡,样品溶液导入ICP-AES或ICP-MS中,与标准系列比较定量。结果硼的质量浓度在0.05 mg/L^2.00 mg/L范围内,呈线性关系。ICP-MS检测硼,添加水平为0.2 mg/L,1.0 mg/L,20 mg/L的回收率在82.5%~118%范围内,相对标准偏差为7.73%~10.9%(n=6),方法检测低限为0.2 mg/kg。ICP-AES检测硼,添加水平为0.5 mg/L,2.5 mg/L,20 mg/L的回收率在85.0%~108%范围内,相对标准偏差为5.07%~7.44%(n=6),方法检测低限为0.5 mg/kg。结论方法灵敏、实用性强。
Objective Borate was determined by inductively coupled plasma atomic emission spectrometry （ ICP - AES） and inductively coupled plasma mass spectrometry （ ICP - MS） in food contact materials. Methods Sample was digested by acid digestion or acid immersion, then detected by ICP - AES and ICP - MS, and compared to standard series. Results Borate ex- hibited good linearity in the concentration of 0.05 mg/L N2. O0 mg/L. With ICP- MS, the recovery of borate was 82.5% 118% at the spiked level of O. 2 rag/L, 1.0 mg/L and 20 mg/L, the RSDs were 7.73% ~ 10.9% （n = 6）, the detection limit was 0.2 mg/kg. While with ICP - AES, the recovery of borate was 85.0% ~ 108% at the spiked level of 0.5 mg/L, 2.5 mg/L and 20 mg/L, the RSDs were 5.07% ~ 7.44% （ n = 6）, the detection limit was 0.5 mg/kg. Conclusion The method showed good reproducibility and sensitivity.
出处
《中国卫生检验杂志》
北大核心
2013年第11期2423-2425,共3页
Chinese Journal of Health Laboratory Technology
基金
上海市科技标准专项(12DZ0503400)
关键词
电感耦合等离子体原子发射光谱
电感耦合等离子体质谱
硼酸盐
食品接触材料
Inductively coupled plasma atomic emission spectrometry
Inductively coupled plasma mass spectrometry
Borate
Food contact materials
