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Distribution and geochemical behaviour of anionic surfactants determined as ethyl violet active substances in L ake B iwa, J apan
Author(s) -
Yoshida Hiroo,
Kudari Shunsuke,
Hori Toshitaka,
Sugiyama Masahito
Publication year - 2015
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/wej.12090
Subject(s) - environmental chemistry , particulates , total organic carbon , chlorophyll a , chemistry , adsorption , desorption , hopanoids , environmental science , geology , organic chemistry , paleontology , biochemistry , structural basin , source rock
Abstract The distribution and geochemical behaviour of anionic surfactants ( AS ) determined as ethyl violet active substances ( EVAS ) were studied in L ake B iwa, J apan. We determined the vertical distributions of dissolved EVAS ( DEVAS ), suspended particulate EVAS ( PEVAS ), particulate organic carbon ( POC ) and the PEVAS / POC ratio. Statistical analyses conducted using plots of PEVAS versus POC and PEVAS / C hlorophyll‐ a ( C hl‐ a ) versus POC / C hl‐ a revealed that the distributions of DEVAS and PEVAS were affected by the concentrations of freshly produced POC and aged POC and by the pH of the lake water. Adsorption and desorption of EVAS onto the POC phase were found to be important mechanisms regulating the distribution and environmental/geochemical behaviour of EVAS in the lake. The organic carbon‐normalized particle–water‐partitioning coefficient, K oc , for EVAS was also estimated and compared with that for nonylphenol.