The determination of chromic oxide in faeces samples by atomic absorption spectrophotometry

Journal of Agricultural Science - Tập 59 Số 3 - Trang 381-385 - 1962
CH Williams1, D. J. David1, O. Iismaa1
1Division of Plant Industry, C.S.I.R.O., Canberra

Tóm tắt

A rapid and accurate atomic absorption method for the determination of chromium in faeces samples from pasture experiments using chromic oxide ‘markers’ is described. Of the elements present after ashing and digesting the samples in a phosphoric acid—manganese sulphate—potassium bromate solution silicate, aluminium, calcium and magnesium were found to interfere in the determination. The effects of these interferences were overcome by the addition of calcium to the test solution and by the addition of silicate to the standards, which were prepared in ‘blank’ solutions.The sensitivities of a number of alternate chromium resonance lines relative to that of Cr 3578·7 Å. are given. These lines may be used to increase the concentration range of the analysis.The results of a comparison of the atomic absorption method with a chemical method are given.

Từ khóa


Tài liệu tham khảo

10.1016/S0003-2670(00)88262-8

10.1039/an9618600730

10.1016/0371-1951(61)80137-9

10.1039/an9598400536

Moore C. E. (1945). A Multiplet Table of Astrophysical Interest, Pt. 1. Revised Ed. Princeton Observatory, New Jersey.

10.1016/0371-1951(62)80041-1

10.1016/0371-1951(55)80013-6

10.1126/science.116.3023.634

Christian, 1954, N.Z. J. Sci. Tech., 36, 328

Gehrke C. W. , Mayer D. T. , Picket E. E. & Runyon C. U. (1950). Bull. Mo. Agric. Exp. Sta. no. 469.

10.1021/jf60073a008

10.1016/0371-1951(57)80193-3

10.1093/jn/41.4.629

Thông tin
Thông tin xuất bản

Journal of Agricultural Science

Tập 59 Số 3

381-385

Thông tin tác giả