ULTRAMICRO SEMIAUTOMATED METHOD FOR SIMULTANEOUS DETERMINATION OF TOTAL PHOSPHORUS AND TOTAL KJELDAHL NITROGEN IN WASTEWATERS

被引:35
作者
JIRKA, AM [1 ]
CARTER, MJ [1 ]
MAY, D [1 ]
FULLER, FD [1 ]
机构
[1] USEPA, CENT REG LAB, CHICAGO, IL 60609 USA
关键词
D O I
10.1021/es60121a003
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
An ultramicro technique for the digestion of organic N and P compounds in wastewater samples is described. The digests are analyzed simultaneously for phosphate and ammonia in the range of 0.02-2.00 mg P/l and of 0.06-10.00 mg N/l 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 P but not for the N results.
引用
收藏
页码:1038 / 1044
页数:7
相关论文
共 76 条
[1]  
AFGHAN BK, 1971, 40 DEP EN MIN RES TE
[2]  
[Anonymous], 1971, STANDARD METHODS EXA, V13th
[3]  
[Anonymous], Z ANAL CHEM
[4]  
BAKER P.R.W., 1961, TALANTA, V8, P57
[5]   SULFURIC-PERCHLORIC ACID DIGESTION OF PLANT MATERIAL FOR NITROGEN DETERMINATION [J].
BATEY, T ;
CRESSER, MS ;
WILLETT, IR .
ANALYTICA CHIMICA ACTA, 1974, 69 (02) :484-487
[6]  
BERTHELOT MPE, 1959, REPERT CHIM APPL, P282
[7]   SPECTROPHOTOMETRIC DETERMINATION OF AMMONIA AS INDOPHENOL [J].
BOLLETER, WT ;
BUSHMAN, CJ ;
TIDWELL, PW .
ANALYTICAL CHEMISTRY, 1961, 33 (04) :592-&
[8]   ACID REQUIREMENTS OF THE KJELDAHL DIGESTION [J].
BRADSTREET, RB .
ANALYTICAL CHEMISTRY, 1957, 29 (06) :944-947
[9]  
BREMNER J. M., 1960, JOUR AGRIC SCI, V55, P11, DOI 10.1017/S0021859600021572
[10]  
BUCHANAN MA, 1973, TAPPI, V56, P127