Heavy Metal Accumulation and the Genotoxicity in Barbel (Barbus barbus) as Indicators of the Danube River Pollution

Table 1

Heavy metal and trace element concentrations in different tissue of barbel (Barbus barbus) (mean value ± standard deviation). Concentrations are expressed as μg/g dry weight, while ND indicates the values below the detection threshold.

		Muscle	Liver	Gills	Gonads
Al	Mean ± SD	ND	4.88,92.76^∗∗	44.23±71.08	ND
	min–max			4.80–243.38
As	Mean ± SD	1.40^∗	0.54^∗	0.59^∗	1.41±0.90
	min–max				0.18–2.71
B	Mean ± SD	ND	ND	10.71±5.70	ND
	min–max			5.95–23.72
Ba	Mean ± SD	ND	ND	10.63±7.07	ND
	min–max			4.26–24.73
Cu	Mean ± SD	ND	27.49±27.05	ND	ND
	min–max		9.32–58.58
Fe	Mean ± SD	ND	78.82±24.66^a	120.91±32.91^b	ND
	min–max		24.07–121.22	78.68–161.50
Mn	Mean ± SD	ND	0.78±0.64^a	7.76±2.54^b	ND
	min–max		0.27–1.64	4.53–12.23
Mo	Mean ± SD	ND	0.27±0.11	0.06,0.81^∗∗	ND
	min–max		0.11–0.40
Sr	Mean ± SD	4.38±2.24^a	0.11±0.07^b	59.60±12.93^c	0.07±0.01^d
	min–max	2.04–9.77	0.06–0.28	36.63–77.03	0.06–0.08
Zn	Mean ± SD	12.89±11.72^a	47.08±18.44^b	47.85±5.53^b	71.69±53.94^b
	min–max	4.72–29.62	21.57–85.06	39.86–57.68	5.21–171.89

^a,b,c,dThe value with a different letter in the same row is different (Man-Whitney U-test, 𝑃<0.05).
*Concentrations above detection threshold only in one sample.
**Concentrations above detection threshold only in two samples.