نتایج جستجو برای: 2 and 3 iukg

تعداد نتایج: 17388515  

Journal: :Journal of Combinatorial Theory, Series A 1979

Journal: :Acta Crystallographica Section E Structure Reports Online 2011

Journal: :Acta Crystallographica Section E Structure Reports Online 2012

Journal: :Discrete Mathematics 1973

Elaheh Mohammadi, Fazel Shamsa, Hamid Mehravar Malehe Barazandeh-Tehrani

Recently, 6-(2-naphthyl)-2, 3-dihydro-as-triazine-3-thione (NDTT) was synthesized in laboratory and used successfully for the spectrophotometric determination of nanogram levels of Cu2+ in aqueous solution. This reagent forms a specific red complex with Cu2+ ions after the extraction by chloroform at alkaline pH. The absorption of the complex in the UV region (313 nm) is about 8 times as strong...

Elaheh Mohammadi, Fazel Shamsa, Hamid Mehravar Malehe Barazandeh-Tehrani

Recently, 6-(2-naphthyl)-2, 3-dihydro-as-triazine-3-thione (NDTT) was synthesized in laboratory and used successfully for the spectrophotometric determination of nanogram levels of Cu2+ in aqueous solution. This reagent forms a specific red complex with Cu2+ ions after the extraction by chloroform at alkaline pH. The absorption of the complex in the UV region (313 nm) is about 8 times as strong...

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