The solubility of a suite of low molecular weight organochlorine compounds in seawater and implications for estimating the marine source of methyl chloride to the atmosphere

Chemosphere - Global Change Science Pub Date : 2000-01-01 DOI:10.1016/S1465-9972(99)00045-8

R.M Moore

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引用次数: 53

Abstract

Oceanic measurements made to determine the fluxes of methyl chloride between the sea surface and atmosphere have pointed to the possibility of significant errors in literature values for the solubility of this gas in seawater. In this work the Henry's Law constant for CH₃Cl in seawater has been measured as $ln H=8.83−2866/T$ , where T is the absolute temperature. Also reported are solubilities for CH₂Cl₂, CHCl₃, C₂HCl₃ and C₂Cl₄. The influence of the new value for CH₃Cl on estimates of its global oceanic source to the atmosphere is discussed. The net flux of CH₃Cl from the ocean to the atmosphere is estimated to be in the range: 6.4–8 × 10⁹ moles yr⁻¹ (0.3–0.4 T g yr⁻¹).

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一组低分子量有机氯化合物在海水中的溶解度及其对估计海洋大气氯甲烷来源的影响

为确定海洋表面和大气之间氯甲烷的通量而进行的海洋测量表明，关于这种气体在海水中的溶解度的文献值可能存在重大误差。在这项工作中，测量海水中CH3Cl的亨利定律常数为lnH=8.83−2866/T，其中T为绝对温度。还报告了CH2Cl2、CHCl3、C2HCl3和C2Cl4的溶解度。讨论了CH3Cl新值对估算其全球海洋大气源的影响。从海洋到大气的CH3Cl的净通量估计在:6.4-8 × 109摩尔yr - 1 (0.3-0.4 T g yr - 1)范围内。

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Chemosphere - Global Change Science

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