Table 2.

Evaluation of the accuracy and precision of the proposed method for determination of HQ, CC, and NT in wastewater sample.

Studied compounds	Concentration added (µM)	Concentration found (µM)	Recovery (%)	Standard deviation	Standard error	Confidence level	RSD (%)
HQ	0.1	0.098	97.72	0.068	0.039	0.168	2.398
	2	2.024	101.22	0.018	0.010	0.044	0.507
	15	15.177	101.18	0.117	0.068	0.290	1.438
	25	25.070	100.28	0.144	0.083	0.357	1.237
	35	35.015	100.04	0.085	0.049	0.212	0.564
CC	0.1	0.101	101.47	0.185	0.107	0.458	2.887
	2	2.048	102.38	0.144	0.083	0.356	1.962
	6	6.037	100.62	0.176	0.101	0.436	1.910
	45	44.641	99.20	0.553	0.319	1.371	2.018
	55	54.384	98.88	0.554	0.320	1.373	1.731
NT	0.1	0.099	98.75	0.193	0.112	0.480	2.662
	2	1.962	98.11	0.030	0.017	0.074	0.376
	20	20.450	102.25	0.126	0.073	0.313	0.889
	30	30.529	101.76	0.089	0.052	0.222	0.507
	40	40.305	100.76	0.026	0.015	0.065	0.125