Methylparaben, which is known to be an endocrine-disrupting chemical, is added to various personal care products, including cosmetics, and is also used as a food preservative and in pharmaceuticals. However, information on the toxicity of methylparaben in soil ecosystems is limited. Furthermore, unlike other substances such as metals and pesticides, there is no regulation of levels or safe concentrations of methylparaben in soil ecosystems. Therefore, the aims of this study were to evaluate the toxicity of methylparaben on soil species and to derive hazardous concentration (HC) values with respect soil ecosystem protection. We conducted acute bioassays on eight species within six taxonomic groups and chronic bioassays on five species within four taxonomic groups. On the basis of the results obtained, we derived an acute HC₅ value of 44 mg/kg soil and a corresponding chronic value of 27 mg/kg soil for methylparaben using species sensitivity distribution methodology following Australian and New Zealand guidelines. Given that there has been no proposed standard value for methylparaben in soil in any country, it was not possible to compare the HC values calculated in this study with regulation standard levels. Nevertheless, to our knowledge, this study is first to assess the toxicity of methylparaben against soil-inhabiting species and to estimate acute and chronic HCs for soil fauna and flora. The results of this study will provide valuable fundamental data for the establishment of acceptable levels of methylparaben in soil.

对羟基苯甲酸甲酯，已知是一种破坏内分泌的化学物质，被添加到包括化妆品在内的各种个人护理产品中，还用作食品防腐剂和药物。但是，有关对羟基苯甲酸甲酯在土壤生态系统中毒性的信息有限。此外，与金属和农药等其他物质不同，对土壤生态系统中对羟基苯甲酸甲酯的含量或安全浓度没有任何规定。因此，本研究的目的是评估对羟基苯甲酸甲酯对土壤物种的毒性，并得出关于土壤生态系统保护的有害浓度（HC）值。我们对六个分类组中的八个物种进行了急性生物测定，并对四个分类组中的五个物种进行了慢性生物测定。根据获得的结果，我们得出了急性HC使用澳大利亚和新西兰指南，采用物种敏感性分布方法，对羟基苯甲酸甲酯的₅值为44 mg / kg土壤，相应的慢性值为27 mg / kg土壤。鉴于在任何国家都没有关于土壤中对羟基苯甲酸甲酯的建议标准值，因此无法将本研究中计算出的HC值与法规标准水平进行比较。然而，据我们所知，本研究首先评估了对羟基苯甲酸甲酯对土壤居住物种的毒性，并估计了土壤动植物的急性和慢性HCs。这项研究的结果将为建立土壤中对羟基苯甲酸甲酯的可接受水平提供有价值的基础数据。