Samples weighing around 260 kg per day were taken, this being more than the amount proposed in Mexican standard NMX-AA-015-1985, but in line with other studies Zeng et al., 2005; Chung and Poon, 2001.
Se tomaron muestras de aproximadamente 260 kg por día, cantidad mayor a la propuesta en la norma mexicana NMX-AA-015-1985, pero acorde con otras investigaciones Zeng et al., 2005; Chung y Poon, 2001.