Thyroid-Disrupting Activities of Groundwater from a Riverbank Filtration System in Wuchang City, China: Seasonal Distribution and Human Health Risk Assessment

Table 1

Predicted hormonal changes in various groups caused by exposure to the mean level of detected thyroidal antagonist activity in river water and groundwater samples (μg/kg).

		Male				Female
		20–44 years		45–59 years	60–90 years	20–44 years	45–59 years	60–90 years
River water	October 2014	Min	−0.75	−0.76	−0.74	−0.74	−0.77	−0.70
		Max	−1.40	−1.42	−1.42	−1.37	−1.44	−1.35
	April 2015	Min	−0.75	−0.76	−0.74	−0.75	−0.77	−0.70
		Max	−1.40	−1.42	−1.42	−1.37	−1.45	−1.35
	July 2015	Min	−0.78	−0.79	−0.77	−0.78	−0.80	−0.73
		Max	−1.43	−1.45	−1.45	−1.40	−1.48	−1.38
Groundwater	October 2014	Min	−0.73	−0.74	−0.72	−0.72	−0.75	−0.68
		Max	−1.38	−1.40	−1.39	−1.35	−1.42	−1.33
	April 2015	Min	−0.70	−0.71	−0.69	−0.70	−0.72	−0.65
		Max	−1.35	−1.37	−1.37	−1.32	−1.40	−1.30
	July 2015	Min	−0.71	−0.72	−0.70	−0.71	−0.73	−0.66
		Max	−1.36	−1.38	−1.38	−1.33	−1.41	−1.31