| خلاصه مقاله | Antibiotics have been increasingly used in veterinary and human medicine. Excessive use of
antibiotics could lead to pollution of the environment and water resources. The aim of this study was
environmental monitoring study of tetracycline in water and wastewater resources in Mianeh.21 samples
were taken from germi Dam, wells of tazekand area, drinking water, the effluents of Mianeh municipal,
hospital and livestock and poultry slaughterhouse wastewater treatment plants. The samples after
extraction and preparation were analyzed using Liquid chromatography–mass spectrometry (LC-MS).The
results showed that the mean tetracycline concentration in surface and ground water was in the range of
2.8 to 25.4 ng L-1. Also, the mean tetracycline concentration in WWTP effluent samples of municipal,
hospital and livestock and poultry slaughterhouse was 266, 530 and 555 ng L-1, respectively. Based on the
results, in water samples, tetracycline concentration in water resources near to livestock and poultry was
higher than the other sampling areas. Also, in wastewater samples, the maximum tetracycline
concentration of 555 ng L-1 was detected at WWTP effluent of poultry slaughterhouse. Furthermore,
tetracycline residue was not detected in drinking water and hospital WWTP effluents. The results
suggested that the use of tetracycline in veterinary was higher compared with medical.This study showed
the occurrence of tetracycline antibiotic in surface water, ground water, the effluents of municipal and
livestock and poultry slaughterhouse WWTPs. Therefore, Tetracycline residues can lead to water
resources contamination and serious environmental problems. |