回复chenzezhi发表于:2020/9/11 16:39:20悬赏金额:
10积分 状态:
未解决
使用日立石墨炉测Cu,曲线点为0,5,10,15,20ug/L,低点都没有分开,到10ug/L之后才正常。
[img=,690,354]https://ng1.17img.cn/bbsfiles/images/2018/12/201812111612459669_566_2344279_3.jpg!w690x354.jpg[/img]
[img=,690,248]https://ng1.17img.cn/bbsfiles/images/2018/12/201812111614490132_6863_2344279_3.jpg!w690x248.jpg[/img]
测Cd也同样是这种情况,曲线为0,0.5,1,1.5,2,具体如下
[img=,690,341]https://ng1.17img.cn/bbsfiles/images/2018/12/201812111636047318_8346_2344279_3.jpg!w690x341.jpg[/img]
请问这是什么原因?
手动配制的曲线0,0.2,0.4,0.8,1.2,2,图如下
[img=,690,330]https://ng1.17img.cn/bbsfiles/images/2018/12/201812111711515268_8627_2344279_3.jpg!w690x330.jpg[/img]