WARNING: Personnel using this standard should have practical experience in laboratory work. This standard does not address all safety issues. It is the user's responsibility to take appropriate safety and health measures and ensure compliance with the conditions stipulated in the relevant national laws and regulations. This part of GB/T 14506 specifies the method for the determination of copper in silicate rocks. This section applies to the determination of the amount of copper in silicate rocks, and also applies to the determination of the amount of copper in soil and water system sediments. Measuring range: Sodium hydroxide-ammonium chloride bottom liquid method is used to measure the amount of copper above 4μg/g by square wave polarography. The amount of copper above 10 μg/g was measured by the oscillographic polarographic derivative part. Potassium thiocyanate-ethylenediamine-sodium sulfite bottom liquid polarographic method is determined to be 5μg/g~125μg/g copper content. The amount of copper measured by flame atomic absorption spectrophotometry is 5 μg/g to 500 μg/g.
GB/T 14506.18-2010 Referenced Document
GB/T 14506.1 Methods for chemical analysis of silicate rocks.Part 1:Determination of hygroscopic water content
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 14506.18-2010 history
2010GB/T 14506.18-2010 Methods for chemical analysis of silicate rocks.Part 18:Determination of copper content