Colored dissolved organic matter

launin narkar da kwayoyin halitta Narkar da kwayoyin halitta masu launin launi (CDOM) shine abin auna gani mai gani na narkar da kwayoyin halitta a cikin ruwa. Har ila yau aka sani da chromophoric narkar da kwayoyin halitta, [1] rawaya abu, da gelbstoff, CDOM yana faruwa ta halitta a cikin ruwa mahalli kuma shi ne wani hadadden cakuda da yawa daruruwan zuwa dubban mutane, musamman kwayoyin kwayoyin halitta, wanda aka farko leaked daga lalata detritus da kwayoyin halitta. CDOM mafi ƙarfi yana ɗaukar ɗan gajeren haske mai tsayi daga shuɗi zuwa ultraviolet, yayin da ruwa mai tsafta yana ɗaukar haske ja mai tsayi mai tsayi. Don haka, ruwan da ba shi da kaɗan ko babu CDOM, kamar buɗaɗɗen teku, yana bayyana shuɗi.[3] Ruwan da ke ɗauke da adadi mai yawa na CDOM na iya zuwa daga launin ruwan kasa, kamar a cikin koguna da yawa, zuwa rawaya da rawaya-launin ruwan kasa a cikin ruwan bakin teku. Gabaɗaya, yawan adadin CDOM ya fi girma a cikin ruwaye masu kyau da maɓuɓɓugar ruwa fiye da na buɗaɗɗen teku, kodayake ƙima yana da sauƙaƙa sosai, kamar yadda aka kiyasta gudummawar CDOM zuwa jimlar narkar da tafkin kwayoyin halitta.