The Occurrence of Organic Peroxides in Seawater
The Occurrence of Organic Peroxides in Seawater
复制标题
海水中有机过氧化物的存在
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
S. Hirata
中科院分区：
文献类型：
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作者：
H. Sakugawa;A. Takami;H. Kawai;K. Takeda;K. Fujiwara;S. Hirata
采用荧光光度法测定海水中有机过氧化物（ROOH）和过氧化氢（H2 O2）。1995年5月，在日本西部的濑户内海的广岛湾和伊予那田采集了海水样品。用酶法对ROOH和H_2O_2进行了鉴别。在海水样品中测量的ROOH浓度在38-389 nM的范围内，而H2 O2浓度在0-195 nM的范围内。海水中ROOH的垂直分布（0-45 m深度）在底层沃茨几乎均匀或稍高，而H2 O2浓度在表层沃茨最高，并随深度而降低。进行线性回归分析，以检查过氧化氢浓度和其他分析项目，如CTD数据，营养物质，荧光有机物和溶解有机碳之间的相关性。结果表明，ROOH浓度与其他参数几乎没有相关性，而H2 O2浓度在广岛湾样品中与盐度高度相关，在伊予-纳达样品中与水温相关性最大。这些结果清楚地表明，ROOH的产生和分解机理不同于H2 O2。
Organic peroxides (ROOH), as well as hydrogen peroxide (H2O2), dissolved in seawater were determined by fluorometry. Seawater samples were collected at Hiroshima Bay and the Iyo-Nada in the Seto Inland Sea, western Japan in May 1995. Using an enzymatic destruction method, ROOH and H2O2 were descriminated from each other. The concentration of ROOH measured was in the range of 38–389 nM in seawater samples, whereas the H2O2 concentration was in the range of 0–195 nM. The vertical distribution (0–45 m depth) of ROOH in seawater was found to be almost uniform or a little higher at the bottom layer waters, whereas the H2O2 concentration was highest at surface waters and decreased with depth. Linear regression analysis was conducted to examine the correlations between peroxide concentrations and other analytical items such as CTD data, nutrients, fluorescent organic matter and dissolved organic carbon. The results showed that the ROOH concentration has almost no correlation with other parameters, whereas the H2O2 concentration highly correlates with the salinity in the Hiroshima Bay samples but mostly correlates with water temperature in the Iyo-Nada samples. These results clearly indicate that the generation and decomposition mechanism of ROOH is different from that of H2O2.