深圳大学学报（理工版）
深圳大學學報（理工版）
심수대학학보（리공판）
JOURNAL OF SHENZHEN UNIVERSITY (SCIENCE & ENGINEERING)
2014年
2期
198-204
,共7页
海洋地球化学%酸挥发性硫化物%同步提取重金属%沉积物%水产养殖%深度分布%生物有效性%广东南澳岛
海洋地毬化學%痠揮髮性硫化物%同步提取重金屬%沉積物%水產養殖%深度分佈%生物有效性%廣東南澳島
해양지구화학%산휘발성류화물%동보제취중금속%침적물%수산양식%심도분포%생물유효성%엄동남오도
marine geochemistry%acid volatile sulfide ( AVS )%simultaneously extracted metals ( SEM )%sedi-ments%aquaculture%depth distribution%bioavaibility%Nan’ao Island of Guangdong province
采集广东省南澳岛白沙湾海水养殖区不同养殖类型的表层和柱状沉积物,分析了沉积物中酸挥发性硫化物( acid volatile sulfides, AVS)和同步提取重金属( simultaneously extracted metals, SEM ) Cd、Pb、 Cr、 Ni、 Cu以及Zn的含量.结果发现,白沙湾表层沉积物(干质量)中AVS和∑SEM质量摩尔浓度分别介于0．04~37．62和1．54~3．82μmol/g,平均值分别为6．36和2．45μmol/g.鱼类养殖区表层沉积物中AVS、∑SEM以及AVS与∑SEM比值均最高.柱状沉积物(干质量)中AVS和∑SEM干质量摩尔浓度范围为0．04~16．27和1．72~21．14μmol/g,平均值分别为2．26和4．71μmol/g.鱼类养殖区的AVS质量摩尔浓度及贝类养殖区的∑SEM 从底层到表层均迅速增加.鱼类养殖区、贝类养殖区和龙须菜栽培区AVS与∑SEM比值均大于1,表明该养殖海域因重金属与硫化物结合导致水生生物受重金属危害较轻.
採集廣東省南澳島白沙灣海水養殖區不同養殖類型的錶層和柱狀沉積物,分析瞭沉積物中痠揮髮性硫化物( acid volatile sulfides, AVS)和同步提取重金屬( simultaneously extracted metals, SEM ) Cd、Pb、 Cr、 Ni、 Cu以及Zn的含量.結果髮現,白沙灣錶層沉積物(榦質量)中AVS和∑SEM質量摩爾濃度分彆介于0．04~37．62和1．54~3．82μmol/g,平均值分彆為6．36和2．45μmol/g.魚類養殖區錶層沉積物中AVS、∑SEM以及AVS與∑SEM比值均最高.柱狀沉積物(榦質量)中AVS和∑SEM榦質量摩爾濃度範圍為0．04~16．27和1．72~21．14μmol/g,平均值分彆為2．26和4．71μmol/g.魚類養殖區的AVS質量摩爾濃度及貝類養殖區的∑SEM 從底層到錶層均迅速增加.魚類養殖區、貝類養殖區和龍鬚菜栽培區AVS與∑SEM比值均大于1,錶明該養殖海域因重金屬與硫化物結閤導緻水生生物受重金屬危害較輕.
채집광동성남오도백사만해수양식구불동양식류형적표층화주상침적물,분석료침적물중산휘발성류화물( acid volatile sulfides, AVS)화동보제취중금속( simultaneously extracted metals, SEM ) Cd、Pb、 Cr、 Ni、 Cu이급Zn적함량.결과발현,백사만표층침적물(간질량)중AVS화∑SEM질량마이농도분별개우0．04~37．62화1．54~3．82μmol/g,평균치분별위6．36화2．45μmol/g.어류양식구표층침적물중AVS、∑SEM이급AVS여∑SEM비치균최고.주상침적물(간질량)중AVS화∑SEM간질량마이농도범위위0．04~16．27화1．72~21．14μmol/g,평균치분별위2．26화4．71μmol/g.어류양식구적AVS질량마이농도급패류양식구적∑SEM 종저층도표층균신속증가.어류양식구、패류양식구화룡수채재배구AVS여∑SEM비치균대우1,표명해양식해역인중금속여류화물결합도치수생생물수중금속위해교경.
Surface and core sediments were collected from Baisha Bay, Nan’ao Island, one of Guangdong Province’s largest mariculture bases in Southern China. Acid-volatile sulfide ( AVS ) and simultaneously extracted metals ( SEM) including Cd, Pb, Cr, Ni, Cu and Zn were analyzed to evaluate sediment quality. In surface sediments, the contents ( dry weight) of AVS and∑SEM were from 0. 04 to 37. 62 μmol/g and from 1. 54 to 3. 82 μmol/g, with average levels of 6. 36 and 2. 45 μmol/g, respectively. The highest contents of AVS,∑SEM and molar ratios of AVS to∑SEM were in fish culture zones. In core sediments, the concentrations ( dry weight) of AVS and∑SEM varied in the range of 0. 04-16. 27 μmol/g and 1. 72-21. 14 μmol/g, with average levels of 2. 26 μmol/g and 4. 71 μmol/g, respectively. The AVS content dramatically increased from bottom to surface sediments in fish culture zone, suggesting that AVS might play a major role in binding heavy metals. On the contrary, the∑SEM content rapidly decreased from bottom to surface sediments in shellfish culture zone. In the surface sediments, the ration of AVS/∑SEM is larger than 1 in the fish cage, shellfish and seaweed zones, indicating that those heavy metals lightly damaged aquatic organisms.
