Gupta A K, Gupta S K, Patil Rashmi S
Department of Civil Engineering, Indian Institute of Technology, Kharagpur, India.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2003;38(11):2711-25. doi: 10.1081/ese-120024458.
The present article discusses and compares five different water quality indices, viz arithmetic water quality index, multiplicative water quality index, unweighted arithmetic water quality index, unweighted multiplicative water quality index, and Harkin's water quality index, which were considered for characterizing the coastal water quality at the Jawaharlal Nehru Port Trust, Bombay, India. Dissolved oxygen, pH, biochemical oxygen demand (BOD), temperature, suspended solid, and turbidity were used as the parameters of water quality indices. The value function graphs used for above-mentioned variables were developed using harbour water quality standards and aquatic life. The product moment correlation coefficients for various water quality indices were determined using the SPSS software package to evaluate correlation among various indices. It was found that the unweighted arithmetic water quality index was higher than weighted arithmetic water quality index while the multiplicative water quality index was lower than unweighted multiplicative water quality index. All the indices were well correlated with each other except Harkin's water quality index. The Harkin's water quality index was different from other water quality indices. The comparison of different form of indices showed that the multiplicative water quality index was the most suitable water quality index for coastal waters.
本文讨论并比较了五种不同的水质指数，即算术水质指数、乘法水质指数、未加权算术水质指数、未加权乘法水质指数和哈金水质指数，这些指数被用于表征印度孟买贾瓦哈拉尔·尼赫鲁港务局的沿海水质。溶解氧、pH值、生化需氧量（BOD）、温度、悬浮固体和浊度被用作水质指数的参数。用于上述变量的价值函数图是根据港口水质标准和水生生物制定的。使用SPSS软件包确定各种水质指数的积矩相关系数，以评估各种指数之间的相关性。结果发现，未加权算术水质指数高于加权算术水质指数，而乘法水质指数低于未加权乘法水质指数。除哈金水质指数外，所有指数之间都具有良好的相关性。哈金水质指数与其他水质指数不同。不同形式指数的比较表明，乘法水质指数是最适合沿海水域的水质指数。
