Question: Which statement below is correct with regard to sampling? Samples should be analyzed as quickly as possible after collection Sodium hydroxide should never be added

Which statement below is correct with regard to sampling? Samples should be analyzed as quickly as possible after collection Sodium hydroxide should never be added to any sample as a preservative Samples should be cooled with ice added directly into the sample All samples must be preserved in the field with either sulfuric or nitric acid

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