Spectrophotometric determination of urea and ammonia in natural waters with hypochlorite and phenol

1969 ◽  
Vol 41 (12) ◽  
pp. 1648-1652 ◽  
Author(s):  
Robert T. Emmet
1990 ◽  
Vol 239 ◽  
pp. 321-323 ◽  
Author(s):  
A. Bermejo-Barrera ◽  
M.C. Yebra-Biurrun ◽  
L.M. Fraga-Trillo

1999 ◽  
Vol 387 (2) ◽  
pp. 217-224 ◽  
Author(s):  
Kazimierz Wróbel ◽  
Katarzyna Wróbel ◽  
Gustavo Cruz-Jiménez ◽  
Fabiola Angulo-Romero

1983 ◽  
Vol 155 ◽  
pp. 263-268 ◽  
Author(s):  
Susumu Nakashima ◽  
Masakazu Yagi ◽  
Michio Zenki ◽  
Akinori Takahashi ◽  
Kyoji Tôei

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