2.2.1. Hoa chat
- Dung djch goc Mo(VI) va W(V1)
Dung djch goc Mo(VI) nong do 1.10"'' M dugc pha tir muli natri molypdat P.Ạ (Na2Mo04.2H20) cua hang Merck (CHLB Dire). Cach pha
duoc tien hanh nhu sau: hoa tan mot luonu can chinh xac 1.2097 n
cr cr
Na2Mo04.2H20 bang nude eat khong ion (deion) \a dinh mire \ao binh 5(J0 ml. Bao quan trong chai nhua eo nap kin.
Dung djch goc W(VI) nong dp 1.10"" M ducrc pha tir muoi natri
vonframat P.Ạ (Na2W04.2H20) eua hang Merck (CHLB Due). Cach pha chl
nhu sau: can chinh xac 1,6522 g Na:W04.2H20 roi hoa tan muoi ket tinh nay bang nude elt khong ion (deion) va djnh mire den vach trong binh dinh mire cd 500 ml. Bao quan trong chai nhua eo nap kin.
Co the kiem tra lai nIng do chinh xac eua dung dich goc bang phuong phap kit tua vdi 8-hydroxyquinolin va phan tich ICP-MS cho W \a kin tua vdi a-benzoinoxim hoac Pb va phan tich Cd -.'X.AS cho Mọ
Cac dung djch nghien cuu cua Mo(\I) \a \ \ ( \ I ) dirov pha hang ngay ngay tarde khi lam thi nghiem tu dung dich goc theo >cii cau cu thẹ
Bdng 2.1. Danh muc cdc thudc thir su dung trong nghien ciru
r
Thuoc thir
(cho 100 ml dung dich nghien ciru)
Brilliant Green (BG) Crystal Violet (CV) 2,2',4'-trioxyazobenzen (TOAB) 8-oxiquinolin (oxin) Rodamin B (RB) Methylene Blue (MB) Neutral Red (NR) Mw (g/mol) 421,04 570,16 230,00 145,16 479,03 373.90 288,78 Lugng can (g) 0,0421 0,0570 0.0230 0.0145 0,0479 0.0373 Dung moi I . Nude cat Nude cat Etanol Etanol Nude cat Nude cat 0.0289 Nude clt
Cac thuoc thir sir dung trong nghien ciru deu la loai tinh khiet phan tich
va hoa hgc eiia Merck. Dung djch goc dugc pha che bang each can chinh xac tren can phan tich lugng thudc thu tuong irng ghi trong bang 2.1. va dinh mire trong binh djnh mire 100 ml de duge dung djch thuoc thu co nong do 1. lÓM.
Cac dung djch thuoc thu nghien ciru dugc pha hang nga\ nga\ uuac
khi lam thi nghiem tir dung djch goc theo yeu cau cu thẹ
- Cac hoa chit khac nhu HCỊ HNO;,. CH3COOH. CH:ClCOOH. CCI^COOH. NaOH. CH;,COONạ NaCỊ NâSÔ ... dIu la hoa chat tinh khiet
cho phan tich eua hang Merck (CHLB Dire): dugc pha \oi cac nong do khac
nhau de phuc vu cho moi nghien ciru cii thẹ Rieng cac hoa chat pha de dieu
chinh pH va lam dung djch dem co nong dp dau la 0.2 M.
- Cac dung moi huu co etanol. propanol. butani^l. dunct\ Itbocmamit. toluen. clorofooc, nitrobenzen ... su dung trong luan an la hoa ctnit tinh khiet cua hanu Merck (CHLB Dire) hoac Prolabo (CM Phap)
- Nhua trao doi anionit bazo manh ki hieu Amberjet^ dang Cf cua Merck (CHLB Dire) cd cac dac tinh:
Dung lugng trao dii > ] ,3 mmol/ml Kich thudc hat (0,425-0,850 mm) > 90 %
Mau vang nhat, am
- Nhua trao doi cationit axit manh ki hieu Lewatit" MonoPlus SI00 dang Nâ cua hang Bayer (CHLB Dire) eo cac dac tinh
Dung lugng trao doi 2.0 meq ml Kich thude hat (0,58 ± 0,05 mm) > 90 %
Mau vang nhat, hoi due 2.2.2. Thiet bj nghien cuu (adsbygoogle = window.adsbygoogle || []).push({});
- May do ehilt suit nhan hieu Ạ KRUSS OPTRONIC AR4-CẸ Germany
- May do UV-VIS-NIR-SCANNING Spectrophotometer cua hang Shimadzu (Nhat ban) eo do phan giai pho Inm. dp chinh xac 0.001 don \i do hip thu quang. Cuvet thach anh chieu da\ kVp dung dich la 1.0 cm.
May do UV-VIS- 1601 PC. Spectrophotometer cua hang Shimadzu
(Nhat ban) cd do phan giai pho Inm. do chinh xac 0.001 don \\ dp hap thu
quang. Cuvet thach anh chieu day Idp dung dich la 1.0 cm.
Ca hai thilt bj do quang na\ dIu dugc dieu khien bang ma> tmh kem phan mem ghi va xir ly phọ
- May khii pho plasma cam ung ICP-MS Agilent 7500' dieu khien bane may tinh kem phan mim dieu khien \a \ir l> ph(^ ICP-MS CHEMSTATION
May khoi pho plasma cam ung Elan 9000, Perkin Elmer - ICP-MS. Thiet bj phu trg la Autosampler AS 93 plus, Perkin Elmer, Microwave MLS - Ethos plus va phan mIm xir ly s i lieụ