Naphthalene sulfonic acids (NSAs) are used primarily as additives in a wide range of industrial products (e.g., rubber materials, coatings, sealants, fuels, paints). Based on modeled physicochemical properties, NSAs would likely partition into sediments or the tissues of biota in an aquatic system. This study examined the potential for three NSAs, dinonylnaphthalene disulfonic acid (DNDS), barium dinonylnaphthalene sulfonate (BaDNS), and calcium dinonylnaphthalene sulfonate (CaDNS), to accumulate in the tissue of a freshwater mussel (Lampsilis siliquoidea) and oligochaete worm (Tubifex tubifex). The ability of L. siliquoidea to depurate accumulated chemical was also assessed. Mussels were exposed via sand spiked with CaDNS for 25 d, and then transferred to clean water where their ability to depurate the chemical over an additional 28 d was monitored. Worms were exposed to each of the three NSAs via spiked sediment for 28 d. NSA concentrations were measured separately in gill, foot, and remaining soft tissues (viscera) for mussels and in whole body tissue samples of worms. For L. siliquoidea, the largest concentration of CaDNS was measured in the gill tissue; once removed from CaDNS exposure, mussels were able to depurate up to 87% of the CaDNS from their tissues in 28 days. The biota-sediment accumulation factors (28-d BSAFs) for T. tubifex were 2.8–5.2, 0.53–0.76, and 0.83–1.11 for DNDS, BaDNS, and CaDNS, respectively. For mussel gill and viscera, BCF_K values were 14.07 and 16.39, respectively. When BAF_Ks were calculated using the concentration of CaDNS in sand, they were 1.11 and 1.29 for mussel gill and viscera, respectively. These values are much lower than what would be necessary to classify this chemical as bioaccumulative; however, the BSAFs for DNDS in T. tubifex indicated a potential biomagnification concern if this compound were to occur in the aquatic environment.

萘磺酸（NSA）主要用作各种工业产品（例如橡胶材料，涂料，密封胶，燃料，油漆）中的添加剂。基于建模的理化特性，NSA可能会分配到水生系统中的沉积物或生物群的组织中。这项研究检查了三种NSA，二壬基萘二磺酸钡（DNDS），二壬基萘磺酸钡（BaDNS）和二壬基萘磺酸钙（CaDNS）在淡水贻贝（Lampsilis siliquoidea）和低聚蠕虫（Tubifex虫）的组织中积累的潜力。）。刺槐的能力净化积累的化学药品也进行了评估。贻贝通过掺有CaDNS的砂子暴露25 d，然后转移到清水中，在那里监测它们在另外28 d内净化化学药品的能力。蠕虫通过加标沉积物暴露于三个NSA中的每一个中28 d。在贻贝的g，足和其余软组织（内脏）以及蠕虫的全身组织样本中分别测量NSA浓度。对于刺槐，在DNS组织中测量到最大的CaDNS浓度。一旦从CaDNS暴露中去除，贻贝就能在28天内从其组织中净化多达87％的CaDNS。生物群沉积物积累系数（28-d BSAFs）为T.水丝蚓对于DNDS，BaDNS和CaDNS，分别为2.8-5.2、0.53-0.76和0.83-1.11。贻贝和内脏的BCF _K值分别为14.07和16.39。使用沙子中CaDNS的浓度计算BAF _K s时，贻贝ill和内脏分别为1.11和1.29。这些值远低于将这种化学品分类为生物蓄积性所需的值。然而，在DNDS的BSAFs T.水丝蚓表明潜在的生物放大作用的关注，如果这种化合物是在水生环境发生。