在线渗析-离子色谱法测定水产品中多聚磷酸盐的研究

Determination of polyphosphates in aquatic products using ion chromatography-inline dialysis

摘要: 文章采用离子色谱法, 结合在线渗析技术对水产品中多聚磷酸盐的质量分数进行了测定。该方法测定多聚磷酸盐离子在质量浓度0~10.0 mg·L^-1线性关系良好, 相关系数达到0.999。检出限为3.0~10 μg·L^-1, 回收率为95.8%~104%, 连续进样检测值相对标准偏差小于10%。试验结果显示该法分离度好, 灵敏度高, 检测结果准确, 操作方便快速, 适合水产品中多聚磷酸盐的测定。

Abstract: The polyphosphates in aquatic products was determined by ion chromatography with inline dialysis. Within the concentration range of 0~10.0 mg·L^-1, the linear correlation coefficient is 0.999; the limit of determination is 3.0~10 μg·L^-1; the recovery is 95.8%~104%; the RSD is less than 10%. The method, which is sensitive, accurate, simple, rapid and has a good efficiency of separation, is suitable for determining polyphosphates in aquatic products.