Distribution of phosphine in the offshore area of the Southwest Yellow Sea,East Asia |
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| Authors: | Yuning Hong Jinju Geng Song Qiao Lili Ding Xueyuan Gu Xiaorong Wang Dietmar Glindemann Hongqiang Ren |
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| Institution: | 1. Department of Archaeology, Faculty of Humanities, VU University Amsterdam, De Boelelaan 1105, Amsterdam 1081 HV, The Netherlands;2. Faculty of Earth and Life Sciences, VU University Amsterdam, De Boelelaan 1085, Amsterdam 1081 HV, The Netherlands;3. Research Institute for the Heritage and History of the Cultural Landscape and Urban Environment (CLUE), VU University Amsterdam, De Boelelaan 1105, Amsterdam 1081 HV, The Netherlands |
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| Abstract: | Phosphine is a natural gaseous compound in the phosphorus biogeochemical cycle. This paper studies the spatial and temporal distributions of matrix-bound phosphine (MBP) and gaseous phosphine in the offshore area of the Southwest Yellow Sea, East Asia. The results show that MBP concentrations in marine surface sediments range from 0.69 ± 0.06 ng/kg (dry) to 179 ± 29 ng/kg (dry). Higher seasonal MBP concentrations in sediments are found in fall than in spring or winter in most sites. High MBP contents are observed in two fish-breeding areas. MBP concentrations decrease with distance to the coast, except in the southeast of the sampling area. MBP levels in marine sediments are found to be higher than those at several other places: freshwater sediments and soil, except eutrophic lakes. Gaseous phosphine contents in fall range from 0.14 ± 0.00 ng/m3 to 9.83 ± 0.97 ng/m3. No correlation is observed between MBP and gaseous phosphine. |
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