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首页> 外文期刊>Journal of pulp and paper science >Rapid Determination of Total Dissolved Solids in Black Liquors by ATR-UV/Vis Spectroscopy
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Rapid Determination of Total Dissolved Solids in Black Liquors by ATR-UV/Vis Spectroscopy

机译：ATR-UV / Vis光谱法快速测定黑酒中的总溶解固体

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摘要

A new attenuated total reflection (ATR) ultraviolet/visible spectroscopic technique is presented for rapid determination of total dissolved solids (TDS) content in black liquors. The amount of nonabsorbing species, such as inorganic salts and carbohydrate degradation products, can affect the refractive index of the black liquor, thus changing the effective optical path length in the ATR measurement. Accordingly, the ATR absorption intensity for dissolved lignin also includes information about the other dissolved solids in the liquor. For the liquor samples tested, the square root of ATR response was linear with TDS from 7 to 23% solids content, and the relationship between ATR response and TDS was nearly linear from 58 to 72% solids content. This ATR technique is simple to use and can be implemented easily for online liquor TDS monitoring.
机译：提出了一种新的衰减全反射（ATR）紫外/可见光谱技术，用于快速测定黑液中的总溶解固体（TDS）含量。非吸收性物质（例如无机盐和碳水化合物降解产物）的数量会影响黑液的折射率，从而改变ATR测量中的有效光程长度。因此，溶解的木质素的ATR吸收强度还包括有关液体中其他溶解固体的信息。对于所测试的酒类样品，ATR响应的平方根与固体含量在7％至23％的TDS呈线性关系，而ATR响应与TDS之间的关系在固体含量从58％至72％时几乎呈线性关系。这种ATR技术易于使用，可以轻松实现在线酒液TDS监控。

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