Nghiên cứu tách Zirconi(IV) các tạp chất bằng Tributylphotphat để xác định chúng bằng ICP-MS

Tạp chí phân lích Hỏa, Lý và Sinh học - Tập 20, số 3/2015

NGHIÊN c ứ u TÁCH ZĨRCONI(IV) KHỎĨ CÁC TẠP CHÁT

BẨVG TRIBUTYLPHOTPHAT ĐẺ XÁC ĐỊNE

Đen tòa soạn 21 - 5 - 201

Chu M ạnh Nhương

Khoa Hóa học, Trường Đại học Sư phạm

SUMMARY

The investigation o f the effects o f extraction time, extractant

loading cap

acid'solution

PARATIGN OF ZIRCONIUM(rV) f r o m :

TRlfítfTY LPH O SPH A TE FO R d e t e r m i n a t e :

CHUNG BANG ICP-MS

Đ H Thái Nguyên

IMPURITIES w rra

'N OF TH E M BY ICP-M S

I.M Ở Đ Ằ L

Ngàv nay, t

tác nhận í'

CyarJex 272

200

contact phases was 20.46 mg/mL

nth different nitric concentrations

\±) HNOs is the poorest

concentration, diluents, acids and

ity o f the solvent, cycles extraction on solvent extraction o f zirconium (Zr) from

v with tributyl phosphate (TBP) in toluene as the extractant. With the extraction

o f 20.5 mg/uL Zr(IV), optimal conditions were: extraction medias was 8 to 12M H N 03

diluent was toluene, TBP concentration was 50% in toluene, extraction time was 1 hour,

loading capacity o f 50% TBP in toluene after 4 times the

Zr(IV), stripping o f metal from the loaded organic (LO) vn

indicated (C.05 to 0.5Ad) H N 0 3 are the best, and (8 to 1 0 l

agent. Me Cab/e-Thiele plot fo r the extraction o f Zr(IV) from nitric acid indicated the

requirement o f 2 stages at organic phase/aqueous phase (O/A) volume ratio o f 2/1 to extract

the 98.75%o ofZr(IV).

With 3 to 4 cycles extraction using 8M HNOs (for extractio;

investigated higher 95% o f almost impurities (35 impuriti

remained in aqueous phase about 3 - 4 %. It was found that with the mentioned amount ofZr,

effect o f Zr on the determination o f impurities, except H f Ti,

A4S can be negligible. This system extraction can be used

and determination o f impurities in high purity zirconium (ah

Keywords: Extraction, zirconium, acids, TBP, toluene, impur

lề giới đã và đan® sử duns các

ư TBP, D2EHPA, PC8 8A,

.. trong nghiên cứu chiết dung

môi Zr(ỉ

định tạp

cao [í A -

ICP-MÊ￾and 10M HNOs (fc^‘ stripping),

can be separated and Zr

..^.n.^ned ain^i*.

Fe, Ga, Cd, V, Sc, As, St by IC.P￾n separation o f the matr'x Zr(lV)

rpjf£, salts and oxides) \by JCP-AdS.

ICP-MS.

stripping

từ môi trường ax it n lăm xác

độ sạch

sử dụng

các hợp