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Detection of humic acid in water using flat-sheet and folded-rod viscous alkaline glucose syrups.
Analyst ( IF 3.6 ) Pub Date : 2020/02/10 , DOI: 10.1039/c9an02083g Olayemi J Fakayode 1 , Sharon Williams , Abolanle S Saheed , Thabo T I Nkambule
Analyst ( IF 3.6 ) Pub Date : 2020/02/10 , DOI: 10.1039/c9an02083g Olayemi J Fakayode 1 , Sharon Williams , Abolanle S Saheed , Thabo T I Nkambule
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The utility of a low-cost biocompatible material for the detection of pollutants in water is highly essential to ensure safety and economic efficiency. In this paper, solutions of two viscous alkaline glucose syrups (AGS@22-sheet and AGS@60-rod), obtained under two different temperature conditions (22 °C and 60 °C) were used to detect low levels of humic acid (HA), a carcinogen pro-molecule and metal-complexing agent in an aqueous solution. The AGS materials were characterized using ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared spectroscopy and scanning electron microscopy (SEM). By evaluation, a detection limit (LOD) as low as 4.6 × 10-5 mg L-1 was obtained. The sensing capability of the new technology was further extended to the detection of HA in a real water sample (tap water) using the standard addition method with 98 and 100.05% recoveries. The sensing was improved in the presence of sodium acetate and sodium citrate and was found to follow a pseudo-first order reaction. These findings show that the as-synthesized glucose syrups have the potential to detect humic acid in water and thus may be employed for the quantification of HA in water treatment plants or textile industry.
中文翻译：
使用平板和折叠杆式粘性碱性葡萄糖浆检测水中的腐殖酸。
低成本生物相容性材料用于检测水中污染物的实用性对于确保安全性和经济效率至关重要。本文使用在两种不同温度条件下（22°C和60°C）获得的两种粘性碱性葡萄糖浆（AGS @ 22-sheet和AGS @ 60-rod）的溶液检测低含量的腐殖酸（ HA），水溶液中的致癌物分子和金属络合剂。使用紫外可见光谱（UV-Vis），傅立叶变换红外光谱和扫描电子显微镜（SEM）对AGS材料进行表征。经评估，检出限（LOD）低至4.6×10-5 mg L-1。这项新技术的检测能力进一步扩展到使用标准添加方法检测真实水样品（自来水）中的HA，回收率达到98％和100.05％。在乙酸钠和柠檬酸钠的存在下，感官得到改善，并且发现其遵循伪一级反应。这些发现表明，合成后的葡萄糖浆具有检测水中腐殖酸的潜力，因此可用于水处理厂或纺织工业中HA的定量分析。
更新日期：2020-03-31
中文翻译：
使用平板和折叠杆式粘性碱性葡萄糖浆检测水中的腐殖酸。
低成本生物相容性材料用于检测水中污染物的实用性对于确保安全性和经济效率至关重要。本文使用在两种不同温度条件下（22°C和60°C）获得的两种粘性碱性葡萄糖浆（AGS @ 22-sheet和AGS @ 60-rod）的溶液检测低含量的腐殖酸（ HA），水溶液中的致癌物分子和金属络合剂。使用紫外可见光谱（UV-Vis），傅立叶变换红外光谱和扫描电子显微镜（SEM）对AGS材料进行表征。经评估，检出限（LOD）低至4.6×10-5 mg L-1。这项新技术的检测能力进一步扩展到使用标准添加方法检测真实水样品（自来水）中的HA，回收率达到98％和100.05％。在乙酸钠和柠檬酸钠的存在下，感官得到改善，并且发现其遵循伪一级反应。这些发现表明，合成后的葡萄糖浆具有检测水中腐殖酸的潜力，因此可用于水处理厂或纺织工业中HA的定量分析。
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