“…31 In the soil burial test, the extent of biodegradation is determined by measuring the weight loss in the hydrogel, which is assumed to represent the percentage of biodegradation in soil. 28,[32][33][34] In the case of the supernatant incubation method, the extent of biodegradation is determined by either weight loss, 31,35 through structural, morphological examination using a scanning electron microscope, 26,36 or through quantifying the CO 2 mineralization using a gas chromatograph or other measuring equipment. 35,37,38 While the soil burial and weight loss method are commonly used in literature, this method has some limitations.…”