文章摘要
Simultaneous Determination of Copper，Manganese and Magnesium Contents in Natural Rubber Latex by Microwave Digestion and ICP-OES
Received:August 21, 2024  Revised:August 21, 2024
DOI：10.12136/j.issn.1000-890X.2026.09.0707
Key Words: natural rubber latex；microwave digestion；ICP-OES；element analysis
Author NameAffiliationE-mail
XU Yongyuan Natural Rubber and Coffee Product Quality Supervision and Inspection Station of Yunnan Province 604359733@qq.com 
LI Quantao Hubei University Yangtze River Delta Innovation Center  
XIAO Yuxiu Jiangxi Guangyuan Chemical Co., Ltd  
ZHANG Ronghua Yunnan Natural Rubber Industry Group Co., Ltd  
LI Fengwei Natural Rubber and Coffee Product Quality Supervision and Inspection Station of Yunnan Province  
RUAN Linguang Yunnan Natural Rubber Industry Group Co., Ltd  
YANG Deming Natural Rubber and Coffee Product Quality Supervision and Inspection Station of Yunnan Province  
ZHU Yanjin* Yunnan Natural Rubber Industry Group Co., Ltd zhuyanjinok@126.com 
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Abstract:
      By using microwave digestion and inductively coupled plasma optical emission spectrometry（ICP-OES），optimizing the conditions of microwave digestion system and digestion program parameters，and screening suitable element analysis spectral lines，the simultaneous and rapid determination of copper，manganese and magnesium contents in natural rubber latex was achieved.The results showed that，the mass concentrations of copper，manganese and magnesium standard solutions in this method had a good linear relationship with the intensities of characteristic spectral lines in the range of 0～10.00 mg·L-1， the correlation factor was above 0.999 7.The relative standard deviations of the three elements were 1.68%～2.61%，the limits of detection were 0.013～0.035 mg·kg-1，and the recovery rates were 99.12%～102.83%，which could meet the relevant detection requirements.
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