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标准溶液配制和使用注意事项
浏览次数:262发布日期:2019-11-25

【LAIYUAN/ZUOZHE】BEINACHUANGLIAN 

标准溶液配制

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BIAOZHUNRONGYEDEQUDEYOULIANGZHONGFANGFA,YIZHONGSHIYONGJIZHUNWUZHIZHIJIEPEIZHI,YIZHONGSHIYONGJIZHUNWUZHIHUOYIZHIZHUNQUENONGDUDEBIAOZHUNRONGYEJINXINGBIAODINGLAIQUDE。

用于配制或标定标准溶液浓度的高纯度化学试剂懂球帝称为基准试剂或基准物质,用基准试剂或基准物质配制成已知准确浓度的溶液称为标准溶液。

标准溶液的取得有两种方法,一种是用基准物质直接配制,一种是用基准物质或已知准确浓度的标准溶液进行标定来取得。标准溶液的浓度准确与否直接关系检测结果的精密度、准确度。因此配制和使用应注意以下事项:

1、YONGYUPEIZHIHUOBIAODINGDEBIAOZHUNRONGYENONGDUDEJIZHUNWUZHIBIXUFUHEYIXIATIAOJIAN:

(1)CHUNDUGAO、ZAZHIHANLIANGYIBANBUDECHAOGUO0.001%,DADAOYOUJICHUN。

(2)HUAXUEXINGZHIWENDING,BUYIXISHI,BUBEIKONGQIYANGHUA,GANZAOSHIBUFENJIE。

懂球帝(3)FENZILIANGDA,SHIYONGSHIYIRONGYUSHUI、XISUAN、XIJIANHEYOUJIRONGJI,NENGCHENGLIANG。

(4)SHIYONGZHONGFUHEHUAXUEFANYINGDEYAOQIU,ZUCHENGHENGDING,BIAODINGSHINENGANHUAXUEFANYINGSHIDINGLIANGWANCHENG,MEIYOUFUFANYINGHUONIFANYING,BIANYUJISUAN。

2、JIZHUNSHIJIBIXUJINGCHONGFENGANZAOHOUCHENGQU,DANGZHIDINGSHIYONGHANYOUJIEJINGSHUIDESHIJISHI,ZHINENGJIANGQIFANGZAISHIYIDEGANZAOQINEIJINXINGGANZAOERBUDEJIARE。

3、配制标准溶液用的溶剂需用GB6682----86规定的二级以上纯水或优级试剂(不得低于分析纯)。

4、PEIZHIHUOBIAODINGBIAOZHUNRONGYESUOYONGSHIJIBIXUSHIJIZHUNSHIJIHUOYOUJICHUNSHIJI。

5、SHIYONGDEFENXITIANPING、SHANGDINGGUAN、RONGLIANGPING、YIYEGUANZHUOXUJIANDINGHUOXIAOZHENG。

懂球帝6、YONGZHIJIEFAPEIZHIBIAOZHUNRONGYESHI,ZHUNQUECHENGQUYIDINGLIANGDEJIZHUNSHIJIRONGJIEHOUYIRURONGLIANGPINGZHONG,YONGRONGJIXISHIDAOBIAOXIAN。GENJUSUOQUDEJIZHUNSHIJIDELIANGHERONGLIANGPINGDERONGLIANGZHIJIEJISUANRONGYEDEZHUNQUENONGDU。

懂球帝7、YONGJIANJIEFAPEIZHIBIAOZHUNRONGYESHI,XIANPEICHENGSHAOGAOYUSUOXUNONGDUDERONGYE,YONGJIZHUNSHIJIHUOYIZHINONGDUDEBIAOZHUNRONGYEZHUNQUEBIAODINGQINONGDU。BIYAOSHIYONGXISHIFADIAOZHENGQINONGDUZHISUOXUZHI。

8、PEIZHIHAODEBIAOZHUNRONGYEYINGZHUMINGMINGCHENG、NONGDU、PEIZHIRIQI、YOUXIAOQI、PEIZHIREN,QINONGDU:YONGmol/L、mg/L、ng/LBIAOSHI。

懂球帝9、BIAODINGBIAOZHUNRONGYEBIXUFENBIE2RENCHENGQUGE4FENJIZHUNSHIJIJINXINGPINGXINGCEDING,PINGXINGBIAODINGJIEGUOXIANGDUIWUCHAYINGXIAOYU0.2%,FOUZEXUYAOZHONGXINBIAODING。

懂球帝10、MEIFENJIZHUNSHIJIDEYONGLIANGBUYINGGUOXIAO,SHIYONG25mlSHANGDINGGUANSHI,YINENGXIAOHAO20mlDIDINGYEWEIYI;SHIYONG50mlDIDINGGUANSHI,YINENGXIAOHAO45mlSHANGDINGYEWEIYI。

懂球帝11、DUINONGDUBUWENDINGDEBIAOZHUNRONGYE,YINGZHUOQINGDINGQIZHONGXINBIAODING。YAOZAIMEICISHIYONGQIANJINXINGBIAODING。

12、GEZHONGBIAOZHUNRONGYEBIXUANQIHUAXUEXINGZHIJINXINGPEIZHIHECHUCUN,DUIYUZAIXIRONGYEZHONGBUWENDINGDEWUZHI,YINGXIANPEIZHINONGDUJIAOGAODECHUBEIYE,SHIYONGQIAN ANFENXIFANGFADEYAOQIUPEIZHICHENGXISHIYE。

13、PEIZHIHAODEBIAOZHUNRONGYEYINGSHIYONGNENGMISAIDEYINGZHIBOLIPINGCHUCUNHUOSULIAOPINGCHUCUN,BUDEZHANGQICHUCUNZAIRONGLIANGPINGZHONG。

14、CHUBEIBIAOZHUNYEYINGZAIDIWENBAOCUN,YONGQIANCHONGFENYAOYUN,GESHIWENXIAPINGHENGWENDUHOUSHIYONG,PEIZHIHESHIYONGBIAOZHUNRONGYESHIDESHIWENYAOKONGZHIZAI20℃WEIYI。

15、GAONONGDUJUDUHUOYOUDUWUZHIDECHUBEIYEYINGANYOUDUSHIJIDESHIYONGHEGUANLIBANFAZHIXING,TUOSHANBAOGUAN,BUDESUIYIFANGGE。

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