| Microwave Digestion-Chemical Method Detecting Talc Powder in Natural Latex |
| Received:January 08, 2016 Revised:January 08, 2016 |
| DOI： |
| Key Words: Natural rubber latex; Digestive agent; Talc powder; Rapid qualitative detection |
| Author Name | Affiliation | E-mail | | ZHENG Xiangqian* | Quality and Technical Supervision Comprehensive Inspection Center of Xishuangbanna Prefecture,Yunnan Province Jinghong 666100 | 13988144059@163.com | | DAO Jianhua | Quality and Technical Supervision Comprehensive Inspection Center of Xishuangbanna Prefecture,Yunnan Province Jinghong 666100 | | | YANG Yinghua | Quality and Technical Supervision Comprehensive Inspection Center of Xishuangbanna Prefecture,Yunnan Province Jinghong 666100 | | | WEI Yonlin | Quality and Technical Supervision Comprehensive Inspection Center of Xishuangbanna Prefecture,Yunnan Province Jinghong 666100 | | | LI Baowei. | Quality and Technical Supervision Comprehensive Inspection Center of Xishuangbanna Prefecture,Yunnan Province Jinghong 666100 | |
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| Abstract: |
| Natural rubber sample were melted with H2SO4 and HF by microwave counteract system, and then determined whether the talc is added by magnesium reagent color reaction. The results show: the suitable digestion condition is 3.5mL H2SO4 and 1.0mL HF as digestion reagent, rising the temperature to 200℃ within 3 min and keeping the temperature for 30 min; the changing of digestion temperature and time have significant effect to test result, and the digestion reagent has an inconspicuous effect；The detecting limit is 3% . |
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