. Author manuscript; available in PMC: 2021 May 22.

Published in final edited form as: ACS Sens. 2020 Apr 29;5(5):1419–1426. doi: 10.1021/acssensors.0c00307

Table 3.

Detection of MC-LR levels in the spiked real water samples from tap, Dongting Lake and Xiang River of Hunan province in China^a

Water sample	Original [MC-LR], C₀ (μg/L)	Spiked [MC-LR], C₁ (μg/L)	ELISA (μg/L)	FL-SERS sensor, C₂		RSD		Recovery percentage
Water sample	Original [MC-LR], C₀ (μg/L)	Spiked [MC-LR], C₁ (μg/L)	ELISA (μg/L)	FL (μg/L)	SERS (μg/L)	FL (%)	SERS (%)	FL (%)	SERS (%)
Tap water	undetectable	2.03	2.14	2.08	2.12	5.77	9.91	102.46	104.43
Dongting Lake	1.82	5.01	6.71	6.89	6.99	3.34	6.29	99.42	102.34
Xiang River	undetectable	1.46	1.52	1.38	1.55	6.52	12.9	94.52	106.16

Note: the real water samples from tap, Dongting Lake and Xiang River were made through spiking with the stock solution of MC-LR, respectively; original [MC-LR] were measured by the standard ELISA method; RSD is the relative standard deviation.