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Determination of phosphorus in natural water using hydride generation and gas chromatography 1
Author(s) -
Hashimoto Shinya,
Fujiwara Kitao,
Fuwa Keiichiro
Publication year - 1987
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1987.32.3.0729
Subject(s) - chemistry , phosphorus , molybdenum blue , phosphine , hydride , seawater , phosphate , sodium borohydride , digestion (alchemy) , chromatography , environmental chemistry , hydrogen , organic chemistry , geology , catalysis , oceanography
A new hydride‐generation method was applied to the determination of phosphorus in seawater and pond water. A sample solution containing phosphate was mixed with a 6% sodium borohydride solution in a quartz vessel and dried under an incandescent light at 40°C for 2 h. Phosphine was reproducibly generated from phosphate by heating this vessel at 460°C. Total phosphorus and total dissolved phosphorus were determined by this method with small sample volume (about 100 µ l) without any digestion procedure. Good agreement was found between the hydride‐generation method and ordinary colorimetry with sample digestion.