This study used fluorescence excitation-emission matrices (EEMs) analysis to investigate the characteristics of natural organic matter (NOM) in treated water using okra crude extract (OCE), sabdariffa crude extract (SCE) and kenaf crude extract (KCE) as coagulants. In addition, an assessment of the impact of purified okra protein (POP), purified sabdariffa protein (PSP) and purified kenaf protein (PKP) was undertaken. The performance evaluation of these coagulants in terms of increase or decrease in dissolved organic carbon (DOC) was compared with Peak T fluorescence intensity observed at excitation wavelength 220–230 nm, and emission wavelength 340–360 nm. Fluorescence analysis of water treated with the crude extracts identified the removal of DOC in peaks A and C region whereas the increase in DOC from the protein was predominantly found in peaks T and B region. Furthermore, it was observed that the purified proteins were noted to be capable of reducing the DOC concentration in raw water where all fluorophores were not detected. The application of OCE, SCE and KCE yielded an increase in DOC of 65, 61 and 55% respectively, corresponding to increases of 65, 29 and 54% in peak T fluorescence intensities, at 100 mg/l dose. Furthermore, DOC concentration was reduced by 25, 24 and 18% using POP, PSP and PKP respectively as coagulants with corresponding decreases in fluorescence intensity of 46%, 44 and 36% in POP, PSP and PKP, at a lower dose of 0.1 mg/l. Therefore, it is clear that Peak T fluorescence intensity could be used to characterise organic matter in treated water using natural extracts to assess final water quality.

这项研究使用荧光激发-发射矩阵（EEMs）分析来研究以秋葵粗提取物（OCE），sabdariffa粗提取物（SCE）和洋麻粗提取物（KCE）作为凝结剂的处理水中的天然有机物（NOM）的特征。此外，评估了纯化的秋葵蛋白（POP），纯化的sabdariffa蛋白（PSP）和纯化的洋麻蛋白（PKP）的影响。比较了这些凝结剂在溶解有机碳（DOC）方面的性能评估，并将其与在激发波长220–230 nm和发射波长340–360 nm处观察到的T峰荧光强度进行了比较。用粗提取物处理过的水的荧光分析确定了峰A和C区域中DOC的去除，而蛋白质中DOC的增加主要出现在T和B峰中。此外，据观察，纯化的蛋白质被发现能够降低DOC中的DOC浓度。未检测到所有荧光团的原水。在100 mg / l剂量下，使用OCE，SCE和KCE可使DOC分别增加65％，61％和55％，对应于峰值T荧光强度增加65％，29％和54％。此外，使用POP，PSP和PKP作为凝结剂，DOC浓度分别降低了25％，24％和18％，而在0.1 mg的较低剂量下，POP，PSP和PKP的荧光强度分别降低了46％，44％和36％。 / l。因此，很明显，峰值T荧光强度可用于使用天然提取物评估最终水质来表征处理后水中的有机物。