scholarly journals Ultraviolet spectrophotometric determination of total nitrogen in sea water samples.

1988 ◽  
Vol 11 (5) ◽  
pp. 320-324,298
Author(s):  
Kazuo HIIRO ◽  
Akinori KAWAHARA ◽  
Takashi TANAKA ◽  
Shin-ichi WAKIDA ◽  
Masataka YAMANE ◽  
...  
Keyword(s):  
Spectrophotometric Determination ◽  
Total Nitrogen ◽  
Water Samples ◽  
Sea Water

Optimization of an analytical method for the spectrophotometric determination of copper in tea and water samples after ultrasonic assisted cloud point extraction using a benzothiazole fluorescein derivative complexing agent

RSC Advances ◽  
2015 ◽  
Vol 5 (80) ◽  
pp. 65321-65327 ◽  
Author(s):  
Chunlei Fan ◽  
Shengxu Luo ◽  
Rong Liu
Keyword(s):  
Cloud Point ◽  
Spectrophotometric Determination ◽  
Water Samples ◽  
Analytical Method ◽  
Cloud Point Extraction ◽  
Complexing Agent ◽  
Ultrasonic Assisted ◽  
Determination Of Copper

BTF is exists with spirolactone species with adding Cu2+, which leads to the absorbance intensity is decreased gradually and the decrease of the absorbance value is linear for Cu2+.

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