La Pera Lara, Di Bella Giuseppa, Rando Rossana, Vincenzo Lo Turco, Dugo Giacomo
Department of Food and Environmental Science, University of Messina, Salita Sperone 31, 98166 Messina, Italy.
Environ Monit Assess. 2008 Oct;145(1-3):119-26. doi: 10.1007/s10661-007-0021-8. Epub 2007 Dec 5.
The purpose of this paper was to use derivative anodic stripping chronopotentiometry (dASCP) as a sensitive and accurate technique, to determine the concentrations of dissolved As (III) and As (V) in coastal seawater samples from the Straits of Messina, the Ionian and the Tyrrhenian seas, and to investigate the relationship between the anthropogenic activities on the coastal areas and the concentration of dissolved inorganic arsenic in seawaters. The obtained data indicated that As (V) was the most abundant species, with concentration ranging from 26.7 to 307 nM, whereas As (III) levels were lower than 48 nM in all the samples. In particular, As (III) and As (V) levels significantly decreased from high to low anthropogenic activities zones (p < 0.00001, ANOVA), with the reference samples, from a wildlife reserve, showing the lowest values. Furthermore it was observed that human activities influenced inorganic arsenic speciation, since the zones that received high human input presented the highest As(V)/As (III) ratio.
本文的目的是使用导数阳极溶出计时电位法（dASCP）作为一种灵敏且准确的技术，来测定墨西拿海峡、伊奥尼亚海和第勒尼安海沿岸海水样品中溶解态As（III）和As（V）的浓度，并研究沿海地区的人为活动与海水中溶解态无机砷浓度之间的关系。所得数据表明，As（V）是最主要的形态，浓度范围为26.7至307 nM，而所有样品中As（III）的含量均低于48 nM。特别是，As（III）和As（V）的含量从高人为活动区到低人为活动区显著降低（p < 0.00001，方差分析），来自野生动物保护区的参考样品显示出最低值。此外，观察到人类活动影响无机砷的形态，因为接受大量人类输入的区域呈现出最高的As（V）/As（III）比值。
