TRNG I HC CNG NGHIP TPHCM KHOA CNG NGH HA HCMN HC: PHN TCH CNG
NGHIP TI: Xc nh Bo trong phn bn v c
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GVHG : ThS Trn Nguyn An Sa SVTH : Trn Vn Huynh MSSV :
090868415/14/12
TM TT NI DUNG CHNH
5/14/12
1. Tng quan v Bo 1.1. Dng tn ti ca Bo trong phn bn v c Trong phn
bn v c Bo ch yu tn ti dng borat ca natri kim
loai v d nh Na2B4O7, Na2B8O13, Na2B10O16 1.2. Hm lng Bo trong mt
s loi phn bn v c tiu biuNPK u tru 13-13-13+TE: 90ppm NPK u tru
20-20-15+TE: 10ppm Bothai 14 - 1 4: 500ppm Kathai 8-4-18+TE:
0.05%
1.3. Vai tr ca Bo trong phn bn v c 5/14/12
2. Cc phng php xc nh Bo trong phn bn v c
2.1 Tng quan cc phng php xc nh Bo 2.2 Phng php ICP - AES 2.3
Phng php GF - AAS 2.4 So snh hai phng php
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2.1 Tng quan cc phng php xc nh Bo
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2.2 Phng php GF - AAS 2.2.1 Phm vii tng: Bo trong phn bn v c ng
bao, dng rn. Hm lng: 0.8 mg/l
2.2.2 Nguyn tc, phng trnh phn ngNguyn tc: Phn hy v ha tan cc hp
cht cha Bo trong mu
phn bng hn hp HNO3 v HCl m c, xc nh hm lng Bo tng bng GF AASPhng
trnh phn ng:5/14/12
Na2 M + HNO3 NaNO3 + H 2 M Na2 M + HCl NaCl + H 2 M
2.2 Phng php GF - AAS 2.2.3 Quy trnh phn tch
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2.2 Phng php GF - AAS
2.2.4 Cng thc tnhC.f.V m
10 4 % X =
Trong C: nng ca Bo trong dung dch xc nh (ppm) f: h s pha long V:
th tch dung dch nh mc m: khi lng mu (g)
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2.3 Phng php ICP - AES 2.3.1 Phm vii tng: Bo trong phn bn v c ng
bao, dng rn. Hm lng: 5 50 g/l
2.3.2 Nguyn tc, phng trnh phn ngNguyn tc: Phn hy v ha tan cc hp
cht cha Bo trong mu
phn bng hn hp HNO3 v HCl m c, xc nh hm lng Bo tng bng ICP -
AESPhng trnh phn ng:5/14/12
Na2 M + HNO3 NaNO3 + H 2 M Na2 M + HCl NaCl + H 2 M
2.3 Phng php ICP - AES 2.3.3 Tm tt quy trnh
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2.4 So snh hai phng php
Ging nhau: nhy ca hai phng php u rt cao nh lng vt kim loi vi
chnh xc cao c th l Bo Tin hnh phn tch m khng cn lm giu mu L hai
trong nhng phng php tin tin nht hin nay
Khc nhau: ICP - AES Nng 5c ppm sai6
