1.
Lancet
; 348(9037): 1318-9, 1996 Nov 09.
Artigo
em Inglês
| MEDLINE
| ID: mdl-8909408
2.
Talanta
; 20(11): 1215-7, 1973 Nov.
Artigo
em Inglês
| MEDLINE
| ID: mdl-18961401
RESUMO
The KBr pellet technique has been used for the determination of alkali metal sulphate in the presence of large excesses of nitrate and nitrite by measuring the absorption of the sulphate at 619 cm(-1). The sulphate can be determined in a 400-fold molar excess of nitrate and a 60-fold molar excess of nitrite with a relative standard deviation of about 5%.
