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【单选题】
水样中存在硫化物的干扰时A.
可加入过量的硫酸亚铁去除
B.
可加入硫酸铜去除
C.
可在碱性条件下用四氯化碳萃取掉
D.
可在酸性条件下用四氯化碳萃取掉
E.
在酸性条件下蒸馏去除废水中挥发酚测定的干扰物质排除如下
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