Chromium, a common pollutant in surface water and groundwater, is widely used in electroplating, leather tanning, and corrosion protection.
铬是地表水和地下水中的常见污染物，它被广泛应用于电镀、制革和防腐。
Chromium is known as a widely distributed element in the crust and most important environmental pollutant.
铬是一种广泛分布于地壳中的元素，同时也是一种重要的环境污染元素。
The toxicity of chromium is related to its oxidation states, and the primary typical pollutant in chromium-containing electroplating waste water is hexavalent chromium.
铬的毒性与其存在状态有关，六价铬是电镀含铬废水中的主要特征污染物。
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