Colorimetric Methods for Determination of Arsenic in Phosphorus-Free Solutions

Zinzadze, Ch.

doi:10.1021/ac50096a009

Cited by 14 publications

(2 citation statements)

References 12 publications

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“…The only interferences reported in the method of Murphy and Riley for phosphate analysis were from selenium (IV) (71) and arsenic (V) (22,32,(72)(73)(74). The ultramicro total phosphorus method was tested for possible interference by the 33 ions listed in Table III.…”

Section: Resultsmentioning

confidence: 99%

Ultramicro semiautomated method for simultaneous determination of total phosphorus and total Kjeldahl nitrogen in waste waters

Jirka¹,

Carter²,

May³

et al. 1976

Environ. Sci. Technol.

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An ultramicro technique for the digestion of organic nitrogen and phosphorus compounds in wastewater samples is described. The digests are analyzed simultaneously for phosphate and ammonia in the range of 0.02-2.00 mg PA. and of 0.06-10.00 mg NA. using automated spectrophotometry at the rate of 30 samples/h. The accuracy, precision, and tolerance to common interferences of the ultramicro method are discussed. Comparability testing of the ultramicro and standard methods shows a small but statistically significant difference for the phosphorus but not for the nitrogen results.

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Section: Resultsmentioning

confidence: 99%

Ultramicro semiautomated method for simultaneous determination of total phosphorus and total Kjeldahl nitrogen in waste waters

Jirka¹,

Carter²,

May³

et al. 1976

Environ. Sci. Technol.

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“…Most are based on the separation of the arsenic by arsine evolution [5,6,9, IB) or by distillation as arsenic trichloride (11) or pentabromide (1, 13). The final determination is usually made by modifications of the Gutzeit method-i.e., absorption of arsine or string, paper, or powder impregnated with silver or mercury salts (6, (1-5, 7, 8, 10, [14][15][16]. Recently, a method using neutron-activation analysis for arsenic in platinum-bearing catalysts was presented (13).…”

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confidence: 99%