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Standard
| HJ/T 399-2007 Water quality-Determination of the chemical oxygen demand-Fast digestion-Spectrophotometric method (English Version) |
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Detail of HJ/T 399-2007
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Introduction of HJ/T 399-2007
本标准适用于地表水、地下水、生活污水和工业废水中化学需氧量（COD）的测定。
本标准对未经稀释的水样，其COD 测定下限为15 mg/L，测定上限为1000mg/L，其氯离子浓度不应大于1000mg/L。
本标准对于化学需氧量（COD）大于1000mg/L 或氯离子含量大于1000mg/L 的水样，可经适当稀释后进行测定。
Contents of HJ/T 399-2007