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技术文章Article 当前位置:滚球体育 > 技术文章 > 智能电热消解仪对茶叶中铅的前处理消解
智能电热消解仪对茶叶中铅的前处理消解
点击次数:32 发布时间:2020-01-03

ZHONGGUOCHAWENHUAZHIJINYOUQIANNIANLISHI,SHENTOURENMENRICHANGXIUXIANSHENGHUODEDIANDI。KERENYUANDAOERLAI,QINZIPAOSHANGYIHUCHA、YIPANXIAOSHIZHAODAI,BIANPINCHABIANJIAOTAN,BUYILEHU。SUIZHEJINGJISHIDAIDEFAZHAN,TURANGWURANYANZHONG、SHUIZHIRANWU、KONGQIWURAN、SHENGHUORANWUDENGDUIZHOUBIANZHONGZHIHUANJINGYOULEYIDINGDEPOHUAI,DAOZHIDUICHAYESHENGCHANLEYINGXIANG,QIZHONGCHAYEZHONGJINSHUCHAOBIAOWENTIBUDUANPINXIAN,ZHONGJINSHUQIANSHIYONGGUOLIANGDUIRENTICHANPINYANZHONGDEWEIHAI,SHENZHIYINGXIANGSHENGMINGANQUAN。YINCIDUICHAYEZHONGJINSHUXIANGGUANBUMENYOULEYANGEDEGUIDING。

 

BENWENZHANGTONGGUOZHINENGDIANREXIAOJIEYIDUIZHOUBIANZHONGZHIYUANDECHAYEJINXINGQIANCHULIXIAOJIE,DUICEDINGCHAYEZHONGJINSHUQIANYUANSUFENXIYOUZHEZHONGDAYIYI,WEICHAYEHUOZHEZHIWUDENGYANJIUTIGAOBAOGUIDESHIFAXIAOJIEJINGYAN。CAIYONGZHINENGDIANREXIAOJIEYIKEZHINENGCHENGXUSHENGWEN,SHEZHIDUOGONGBUXIAOJIE,ZHICHIBAOCUN10ZHONGFANGFA,WEICHAYEXIAOJIEJIANSHAORENLIXIAOHAO,JIESHENGSHIJIAN,DADATIGAOXIAOLV。

 

实验消解部分

1、准备设备

ZHINENGDIANREXIAOJIEYI(DS-360H,GEDANNA)、BOLIXIAOJIEGUAN

2、消解试剂

XIAOSUAN(HNO3 ρ=1.42g/mL)YOUJICHUN、GAOLVSUAN(HClO4 ρ=1.68g/mL)YOUJICHUN、GUOYANGHUAQING(H2O2 30%)FENXICHUN。

3、制样

CAIZHAICHAYEYUANQUDECHAYE,QINGXIFENSUI,HONGGAN,BINGTONGGUO120MUSHAI,BEIYONG。

4、茶叶消解方法

CHENGQUYIBEIYONGDECHAYEYANGBEN0.5gYUBOLIXIAOJIEGUANZHONG,JIARU10mLXIAOSUANHNO3,SAISHANGDAIBOLIGAIZI,FANGZHIGUOYE。QUBOLIGUANCHARUZHINENGDIANREXIAOJIEYIXIAOJIEKONGZHONG,TONGGUOWUXIANPINGBANAPPCHENGXUSHEZHIBINGQIDONGXIAOJIEYIWENDUWEI65℃,HUANMANJIARESHIYANGPINQIPAOHUNHE,BAOCHI65℃HENGWEN15min,JIXUSHENGWENDAO135℃,BAOCHI1h,JIAREXIAOJIEYANGPIN。RUXIAOJIEBUWANQUAN,LENGQUEHOUBUJIA5mLHUNHESUAN(HNO3+HClO4 4+1)HUODIJIAGUOYANGHUAQINGH2O2,SHENGWENBINGBAOCHIWENDU,ZHIYANGPINRONGYETOUMING。ZUIHOUJIANGSHENGWENDAO160℃,GANSUANZHI2mLZUOYOU,LENGQUEDINGRONG,BEIYONG。TONGSHIZUOKONGBAISHIYANG。

5、实验总结

CAIYONGZHINENGDIANREXIAOJIEYIDUICHAYEYANGPINJINXINGQIANCHULIXIAOJIE,CEDINGFENXIZHONGJINSHUYUANSUQIANDEHANLIANG,SHIYANXIAOJIECHEDIXIAOGUOMANZUYAOQIU,XIAOJIEFANGFAYESHIYONGYUQITAZHIWUDEXIAOJIE,ZHENGTIXIAOJIESHIYANBICHUANTONGDIANREBANCHULIXIAOLVGENGKUAI、GENGGAO。

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