China Plastics ›› 2020, Vol. 34 ›› Issue (9): 73-79.DOI: 10.19491/j.issn.1001-9278.2020.09.013

• Standard and Test • Previous Articles     Next Articles

Feasibility Study on Detection of Metal Elements and Ions in Plastic Infusion Containers by ICP-OES

WU Jingwen()   

  1. Chongqing Institute for Food and Drug Control, Chongqing 401121, China
  • Received:2020-03-24 Online:2020-09-26 Published:2020-09-25

Abstract:

To gain a rapid, accuracy and economic test result, an inductively coupled plasma atomic emission spectrometry (ICP-OES) method was adopted to detect the contents of metal elements and metal ions in plastic infusion containers. The test samples were treated according to the method of National standards for package of medicine (2015). The solution containing the test sample was directly analyzed by the ICP-OES, and the methodological investigation was carried out. The optimum detection scheme was selected by comparing with the standard atomic absorption method. Based on the analysis of test results, the spectral lines of lead, cadmium, copper, aluminum, barium, tin and chromium were determined as 220.353, 214.438, 324.754, 167.079, 445.403,189.989 and 283.563 nm, respectively. The detection limits were 2.09, 0.05, 0.67, 0.60, 0.32, 0.88 and 0.90 ng/mL, respectively. The precisions at 20 ng/mL were determined as 2.53 %, 0.12 %, 0.96 %, 0.42 %, 0.33 %, 1.22 % and 1.55 %, respectively. The recovery rates of metal elements and ions were determined as 80.71%~113.95 % and 72.30 %~129.36 %, respectively. The ICP?OES method can be used to determine the contents of metal elements and ions in plastic infusion containers quickly and accurately.

Key words: inductively coupled plasma atomic emission spectrometry, atomic absorption method, metal elements, metal ions, plastic infusion containers

CLC Number: