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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 13580.7-1992 |
Determination of nitrite in the wet precipitation--N-(1-naphthyl)-1， 2-diaminoethane dihydrochloride spectrophotometry 大气降水中亚硝酸盐测定 N-(1-萘基)-乙二胺光度法 |
China National Standards Determination nitrite the |
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