试液pH对分光光度法测定电厂水汽中痕量铁的影响
星成霞,刘龙飞,王应高
Influence of testing liquid pH on the accuracy of spectrophotometry determination of trace iron in water-steam system at power plants
Chengxia Xing,Longfei Liu,Yinggao Wang
表2
连续流动法测定排废pH数据
Fe
3+
质量浓度/（μg·L
-1
）
500
200
100
20
1
水
缓冲液调整后pH
1.6
2.05
2.30
3.00
4.26
4.80
显色反应后排废口pH
2.05
2.97
3.57
3.89
3.88
3.85