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1、農(nóng)業(yè)環(huán)境科學(xué)學(xué)報(bào)2010,29(1):168—173JournalofAgro—EnvironmentScience天津于橋水庫(kù)沉積物理化特征及磷賦存形態(tài)研究朱興旺,劉光遜,梁麗君,馬麗麗,王玉秋(南開大學(xué)環(huán)境科學(xué)與工程學(xué)院環(huán)境污染控制過程與基準(zhǔn)教育部重點(diǎn)實(shí)驗(yàn)室,天津300071)摘要:以天津于橋水庫(kù)作為我國(guó)北方湖泊的代表,應(yīng)用淡水沉積物磷形態(tài)的標(biāo)準(zhǔn)測(cè)試程序(SMT)對(duì)于橋水庫(kù)6個(gè)表層沉積物樣品的理化特征及磷賦存形態(tài)進(jìn)行分析,并在此基礎(chǔ)上探討了各形態(tài)磷之間及各形態(tài)磷與沉積物理化特征,如陽(yáng)離子交換量、有機(jī)質(zhì)總量、顆粒組成、
2、主要金屬含量之間的相關(guān)性。結(jié)果表明,研究區(qū)域內(nèi)總磷含量為354--581mg·kg:~,其中以無機(jī)磷(IP)為主;占總磷含量的57.3%一-74.7%;3種主要磷形態(tài)含量的大小依次為Ca—P>OP>A1/Fe—P,其中Ca—P是沉積物中磷的主要賦存形態(tài);隨著沉積物中有機(jī)磷含量的增加,有機(jī)質(zhì)總量與陽(yáng)離子交換量也逐漸提高,細(xì)粉粒(0.01~0.005mm)的含量也有所增加。此外,還對(duì)水庫(kù)調(diào)水前后沉積物磷賦存形態(tài)的變化進(jìn)行了研究,發(fā)現(xiàn)沉積物在調(diào)水期間主要扮演“匯”的角色,其中Fe/A1一P為調(diào)水期內(nèi)變化最為活躍的磷形態(tài)。關(guān)鍵詞
3、:沉積物;磷賦存形態(tài);理化特征;水庫(kù)調(diào)水中圖分類號(hào):X524文獻(xiàn)標(biāo)志碼:A文章編號(hào):1672—2043(2010)01—0168—06Physical-ChemicalCharacteristicsandPhosphorusSpeciationintheSedimentsoftheTianjinYuqiaoReserviorZHUXing-wang,LIUGuang-xun,LIANGLi-jun,MALi-li,WANGYu-qiu(KeyLaboratoryofEnvironmentalPollutionContro
4、lProcessandBenchmark(NankaiUniversity),MinistryofEducation,CollegeofEnviron-mentalScienceandEngineering,NankaiUniversity,Tianjin300071,China)Abstract:Thestandardmeasurementandtest(SMT)procedureforfreshwatersedimentswasappliedtotheinvestigationofphosphorousformsin
5、thesurfacesediments(0一-10cm)whichobtainedfromsixvariousregionsinYuqiaoReservoir.Therelationshipbetweendifferentphosphorousforms,aswellasphysical-chemicalpropertiesincludingcationexchangecapacity,organicmattercontent,particlecompositionandcontentofthemainmental,we
6、reanalyzedanddiscussed.Theresultssuggestedthatthetotalphosphorouscontent,inwhichinorganic-Ptakes57.3%一-74.7%.rangedfrom354to581mg。kg~.ThesizeorderofthethreemainformsofphosphorusspeciationwasCa-P>OP>A1/Fe-P,andtheCa-PwasthemajorityofTP.Astheconcentrationsoforganop
7、hosphorusincrease,organicmatter,cationexchangecapacityandclay(0.01一-0.005mm)werealsoontheincrease.ThecomparativestudyonphosphorusformsinsedimentbeforeandafterwatertransferoftheYuqiaoReservoirshowedthatthesedimentsinksphosphorus.a(chǎn)ndtheFe/A1一Pwasthemostactivephosph
8、orusformsinthetransferperiod.Keywords:sediment;phosphorousforms;physical-chemicalcharacteristics;watertransfer于橋水庫(kù)是引灤入津工程重要的調(diào)蓄水庫(kù),也是對(duì)比,得出于橋水庫(kù)水質(zhì)已處于富營(yíng)養(yǎng)化向重度營(yíng)養(yǎng)天津市人民