| 微波消解-化学法测定天然胶乳中滑石粉的方法研究 |
| Microwave Digestion-Chemical Method Detecting Talc Powder in Natural Latex |
| 投稿时间：2016-01-08 修订日期：2016-01-08 |
| DOI： |
| 中文关键词: 天然胶乳 微波消解 滑石粉 快速检测 |
| 英文关键词: Natural rubber latex Digestive agent Talc powder Rapid qualitative detection |
| 基金项目:国家质检总局科技计划项目(项目合同编号：2013QK075) |
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| 中文摘要: |
| 采用微波消解系统,加入H2SO4和HF消解天然胶乳样品,通过镁试剂的显色反应,判断天然胶乳中是否加入滑石粉。结果表明：?最优的消解条件为：加入3.5mLH2SO4和1.0mLHF,3min内升温至200℃,并保持30min；?消解温度和时间的变化对测定结果的影响较大,消解试剂用量变化的影响较小；该方法的检出限为3%。 |
| 英文摘要: |
| 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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