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[求助] BOD5 HJ505-2009稀释与接种法中,稀释水和接种水空白BOD5值合理范围到底是多少?

各位前辈好!晚生最近在准备上岗证考试,在看《环境监测人员持证上岗考核试题集》时发现,有一道题好像与标准不符。

习题中说稀释水和接种稀释水的BOD5合理范围分别为<0.2mg/L,0.03-1.0mg/L.而标准中分别为<0.5mg/L和<0.15mg/L.这是怎么回事呢?




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