The other chemicals of the periodic table are also being used very widely, but due to the agency of natural microorganisms and their combination with organic substances they get broken down. Basically it is only the heavy metals that cannot merge into nature but leave traces that last for a very long time.
被列在化學元素周期表上的其他非金屬元素，使用的也極廣泛，但由於自然界中的微生物、有機質能將有機化合物消滅於無形，原本就是單一元素的重金屬卻能與天地不朽，因此「後遺症」會拖得愈久。