This paper focuses on the abiotic reduction of selenite (Se(IV)) by cysteine (Cys, NH3+CH(CH2SH)COOH), which is a representative thiol produced by aquatic organism under oxidative stress. The rates of reduction of Se(IV) by cysteine were measured in deaerated NaCl solutions and natural waters as a function of pH (4.0–9.0), temperature (10–40 C), and ionic strength (0.01–1.0 M). Environmental significance of the results and the importance of abiotic vs biotic reactions are also briefly discussed.
Reduction of selenite by cysteine in ionic media / Gennari, Francesca; V. K., Sharma; M., Pettine; Campanella, Luigi; F. J., Millero. - In: GEOCHIMICA ET COSMOCHIMICA ACTA. - ISSN 0016-7037. - STAMPA. - 124:(2014), pp. 98-108. [10.1016/j.gca.2013.09.019]
Reduction of selenite by cysteine in ionic media
GENNARI, Francesca;CAMPANELLA, Luigi;
2014
Abstract
This paper focuses on the abiotic reduction of selenite (Se(IV)) by cysteine (Cys, NH3+CH(CH2SH)COOH), which is a representative thiol produced by aquatic organism under oxidative stress. The rates of reduction of Se(IV) by cysteine were measured in deaerated NaCl solutions and natural waters as a function of pH (4.0–9.0), temperature (10–40 C), and ionic strength (0.01–1.0 M). Environmental significance of the results and the importance of abiotic vs biotic reactions are also briefly discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
