Toxicity of an anionic detergent, dodecylbenzene sodium sulfonate, to a freshwater fish, Rita rita: determination of LC50 values by different methods.

LC50 values and their 95% confidence limits for various intervals of exposure to an anionic detergent, dodecylbenzene sodium sulfonate, have been determined using recommended methods. The advantages and disadvantages of these methods are discussed in light of the variations in the values. Different visible behaviors of the fish under the influence of the detergent have also been explained.