科學家發(fā)現大氣中羰基硫的來源，人為來源可能比以前認為的更為重要。
The study revealed that anthropogenic sources of?carbonyl sulfide?are likely to be more important than previously thought.?
羰基硫（COS）是大氣中最穩(wěn)定，含量最高的含硫氣體。它來自自然和人為來源，對于研究從大氣中吸收多少二氧化碳（CO2）植物進行光合作用的科學家至關重要。
Carbonyl sulfide (COS) is the most stable and abundant sulfur-containing gas in the atmosphere.?It is derived from both natural and anthropogenic sources and is of key?interest to scientists investigating how much carbon dioxide (CO2) plants take out of the atmosphere for photosynthesis.?
圖片來源：Mindy Takamiya（mindytakamiya.com/）東京工業(yè)大學（Tokyo Tech）的研究人員報告說，人為來源的羰基硫（COS）來源不只是海洋來源，還占大氣中COS缺失的大部分來源。他們的發(fā)現為使用COS動力學估算全球光合作用（吸收CO2）提供了更好的背景。
Researchers at Tokyo Institute of Technology (Tokyo Tech) report that anthropogenic sources of carbonyl sulfide (COS), not just oceanic sources, account for much of the missing source of COS?in the atmosphere. Their findings provide better context for estimates of global photosynthesis (taking up CO2) using COS?dynamics.
該研究的主要作者Shohei Hattori說：“我們能夠基于硫同位素比率將人為和海洋信號分離出來，這真是令人興奮。“這些測量每次采樣至少需要200升空氣。我們通過開發(fā)新的采樣系統(tǒng)克服了這一挑戰(zhàn)，并最終成功地測量了大氣COS的硫同位素比。”
"It's very exciting that we were able to separate anthropogenic and oceanic signals for COS?sources based on sulfur isotope ratios," says Shohei Hattori, the?lead author of the study. "These measurements required at least 200 liters of air for each sample measurement. We overcame this challenge by developing a new sampling system, and eventually succeeded in measuring sulfur isotope ratios of the atmospheric COS."
羰基硫是具有線性公式OCS的化合物。通常以COS的形式表示其化學結構，它是一種無色易燃氣體，具有難聞的氣味。它是由雙鍵連接到硫原子上的羰基組成的線性分子。羰基硫可以被認為是介于二氧化碳和二硫化碳之間的中間體，兩者都是等價電子。羰基硫是通過化學合成方法制造的，然后通過蒸餾進行純化。在MOCVD中用作含硫前驅物。
Carbonyl sulfide?is the?chemical compound?with the?linear formula?OCS. Normally written as COS as a chemical formula, it is a colourless flammable?gas?with an unpleasant?odor.?It is a linear molecule consisting of a?carbonyl?group?double bonded?to a sulfur atom. Carbonyl sulphide is manufactured by a chemical synthesis method and then purified by distillation. It is used as a sulfur containing precursor in MOCVD.??
作為中國先進的化學材料供應商，上海眾巍能夠及時提供足夠的高純度羰基硫醚，并根據您的要求定制不同的規(guī)格。
As an advanced chemical material supplier in China, Wechem is able to provide sufficient high purity Carbonyl sulfide in a timely manner and also custom different specifications according to your requirements.
以下是上海眾巍COS的產品規(guī)格：
Below is a?specification to Wechem’s COS:
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