- Tdng ham luang cac kim lôi dugc xac dinh theo phuang phap ICPMS tren thiet b, cua hang Perkin Elmer Sciex Elan 5000 ICPmass spectrometer Ty so khoi lugng dien tich (M/Z)
NGHIEN Ciru DANH GIA NGUON GOC VA PHAN BO KIM LOAI NANG TRONG MOT SO CAY THUOC VA DAT TRONG CAY THUOC
NANG TRONG MOT SO CAY THUOC VA DAT TRONG CAY THUOC BANG PHÚONG PHAP PHAN TICH ICP-MS VA THONG KE DA BIEN
DknToasoan 12-7-2010
TA THI THAÓ, NGUYEN VAN THUAN', NGUYEN TH! HUONG THOM'
Khoa Hoa hoc, Trucmg Dai hoc Khoa hoc Tic nhien- Dai hgc Qude gia Hd Npi Vi§n Bao tang Lich sir Ha NQI
ABSTRACT
Forty samples of soils and twenty medicinal herbs samples were collected from 2 gardens of traditional herbal plants in Hung Yen and Hanoi for determination of II heavy metal contents using ICP- MS techniques. The application of principal component analysis (PCA) and cluster analysis (CA) were performed and main sources for soils in Hung Yen and Hanoi were identified by Hg, Pb and As respectivelỵ High content of Fe in soils derived mainly from natural sourcẹ The soil's quality, edaphic factors and conditions of care of plants predominantly effected to bioaccumulation of heavy metals in medicinal herbs. Based on PCA and CA analyses. Cr and Cd were selected as the reference elements for perennial herbal plants, while Fe, Mn and Cu were highly accumulated in short medicinal herbs.
I - Md DAU
Dong duoc dong vai tro quan trong trong cuoc sdng va co y nghTa to Ion trong phong benh va trj benh theo y hoc co truyen phuong
Dong. Tuy nhien, chat luong va 66 an toan cua
cac san pham dong dugc iiien la cau hoi con bo ngọ Nhung nam gan day o mien Bac nuoc ta hinh thanh mot so lang nghi trong va che bien thudc Dong y, nhung quy trinh trong, cham soc va che bien vin chii y^u theo kinh nghiem, chua theo tieu chuan nao nen chat lugng con tha noị
Trong so cac loai dgc t6, kim loai nang la
mgt nhom dgc to dac biet, thuong tdn tai a trang
thai ben vung trong moi truong, song dang thuc hoa hgc ciia chimg co thi bi thay doi boi cac yeu t6 ly, hoa, sinh hgc hoac boi cac hoat dgng
cua con ngudi va do do dgc tinh ciia chiing cung
bj thay đi theo [I]. Thuc te, d nhiem dat trdng, nu-ac tudi va mdi trirdng khdng khi, sir di
ciia cay thudc khac nhau vdi tirng kim loai cun| nhu mire do anh hudng ciia chiing tiiy the( ngudn gdc phat tan ciia cac kim loai khac nhai cung khac nhaụ
Phuong phap phan tich thdng ke da biei hien nay da duoc sir dung rong rai trong \ie tim nguon gdc va phan loai chat d nhiem. Vi du danh gia ngudn gdc va su phan bd ham Urgn; kim loai nang tai mgt sd bai thu gom va xu I rac thai dien, dien tir [2], nghien ciru cac yeu t anh hudng chinh den thanh phan nude thai d thi dl danh gia d nhiem asen [3]. danh gi n"u6n gdc va sir lan truyen d nhiem va tim r cac vi tri cd ham lugng kim loai tuong duon nhau trong cac mau dat d ngoai d va cdng \ ie Hong Kdng [4], danh gia ngudn gdc cac kir joai^lugng vet trong mau nude be mat [^ ncuon gdc su khac nhau cac ngusen td va dan
c\i mire dg tuonii dong cua cac kim loai tron
nuc dich su dung plurang phap phan tich <e da bien de phan loai va danh gia ngudn
phan bo ham lugng cac kim loai nang mat trong dat trong cay thu6c va cay lam tai hai vuan thuoc nam thuoc Hung .Ha Npị