Changesintheseasonalconcentrationso

Changesintheseasonalconcentrationsofheavymetals(Cu,Mn,Fe,Zn,PbandCd)weredeterminedin
water, sediments,snails(Pomaceacanaliculata) andaquaticplants(Ipomoeaaquatica) inthreeselected
tributariesoftheBeungBoraphetreservoir,NakhonSawanProvince,centralThailand.OnlyFe,Cu,Mn
and ZnweredetectedbyFAASinallsamplescollected.ThewaterqualityofBeungBoraphetwas
mediumcleanwithFe,Mn,CuandZnconcentrationswellbelowinternationallyacceptedlimits.
AccordingtothecriteriaproposedforsedimentsbytheEPARegionV,ZnandMnconcentrationswere
withinthenon-pollutedrangewhileFeandCu(wetseason)concentrationsfellintotheclassof
severely pollutedsediment.Both P. canaliculata and I. aquatica bioconcentratedmoreMnintheir
tissues thanwerefoundinsediments,especiallyinthewetseason.TheresultsofPearsoncorrelation
studyandBCFvaluesalsoindicatedsimilarfindings.OnlyMnshowedtheimportanceofsediment-to-
snail concentrationandhighBCFvaluesinbothsnailsandplants. P. canaliculata exposedto
contaminatedsedimentfortwomonths,showedhigheraccumulationofmetals(Fe,Mn,CuandZn)
in thedigestivetractsanddigestiveglandsthaninthefootmuscles.Histopathologicalchangesincluded
alterationsintheepithelialliningofthedigestivetracts,digestiveglandsandthegills.Lossofciliaand
increaseinmucouscellswereobservedinthedigestivetractsandgills,whilethedigestiveglands
exhibitedanincreaseofdarkgranulesandbasophiliccells,anddilationofdigestivecells.Theresults
indicatedthatboth P. canaliculata and I. aquatica could beusedasbiomonitorsofsedimentarymetal
contaminationfortheBeungBoraphetreservoir.

ผลลัพธ์ (ไทย) 2:

Changesintheseasonalconcentrationsofheavymetals (Cu, Mn, Fe, Zn, PbandCd) weredeterminedin
น้ำตะกอนหอยทาก (Pomaceacanaliculata) andaquaticplants (Ipomoeaaquatica) pollutedsediment.Both พี canaliculata และฉัน Aquatica bioconcentratedmoreMnintheir เนื้อเยื่อ concentrationandhighBCFvaluesinbothsnailsandplants พี canaliculata exposedto contaminatedsedimentfortwomonths, showedhigheraccumulationofmetals (เฟ, Mn, CuandZn) ใน พี canaliculata และฉัน Aquatica สามารถ beusedasbiomonitorsofsedimentarymetal contaminationfortheBeungBoraphetreservoir

ผลลัพธ์ (ไทย) 3:

changesintheseasonalconcentrationsofheavymetals ( Cu Mn , Fe , Zn , pbandcd ) weredeterminedin
น้ำ ตะกอน หอยทาก ( pomaceacanaliculata ) andaquaticplants ( ipomoeaaquatica ) inthreeselected
tributariesofthebeungboraphetreservoir nakhonsawanprovince ภาคกลาง , , . onlyfe , ทองแดง , แมงกานีส และ thewaterqualityofbeungboraphetwas znweredetectedbyfaasinallsamplescollected
.
mediumcleanwithfe , MN ,cuandznconcentrationswellbelowinternationallyacceptedlimits accordingtothecriteriaproposedforsedimentsbytheeparegionv znandmnconcentrationswere
.
, withinthenon pollutedrangewhilefeandcu ( wetseason ) concentrationsfellintotheclassof
pollutedsediment อย่างรุนแรง ทั้งหน้าและผม ที่มีต่อเนื้อเยื่อ thanwerefoundinsediments especiallyinthewetseason ผักบุ้ง bioconcentratedmoremnintheir
, .theresultsofpearsoncorrelation
-
studyandbcfvaluesalsoindicatedsimilarfindings . onlymnshowedtheimportanceofsediment หอยทาก concentrationandhighbcfvaluesinbothsnailsandplants . หน้าลาย exposedto
contaminatedsedimentfortwomonths showedhigheraccumulationofmetals , ( Fe , Mn , cuandzn )

histopathologicalchangesincluded ใน thedigestivetractsanddigestiveglandsthaninthefootmuscles .alterationsintheepithelialliningofthedigestivetracts digestiveglandsandthegills , . lossofciliaand increaseinmucouscellswereobservedinthedigestivetractsandgills exhibitedanincreaseofdarkgranulesandbasophiliccells whilethedigestiveglands

, ,
indicatedthatboth หน้าลาย anddilationofdigestivecells ผลและผักบุ้งจะ beusedasbiomonitorsofsedimentarymetal
.contaminationforthebeungboraphetreservoir .