00000nam 2200000za 4500 9.864664 CaOODSP 20221107161613 cr ||||||||||| 181114s1971 onca o f000 0 eng CaOODSP eng n-cn--- En36-515/40E-PDF Afghan, B. K. Use of ultraviolet irradiation in the determination of nutrients in water with special reference to nitrogen [electronic resource] / B.K. Afghan, P.D. Goulden, and J.F. Ryan. Ottawa : Inland Waters Branch, Dept. of Energy, Mines and Resources, 1971. iv, 22 p. : ill. Technical bulletin ; no. 40 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "The role of nutrients in natural waters is very well known (Jenkins,1968). One such nutrient, nitrogen, occurs in natural waters in inorganic as well as organic forms. The differentiation of various forms of nitrogen is of considerable value in the study of some specific biological aspects of pollution (Jenkins, 1968) and, to further our understanding of this phenomenon, the Water Quality Division has undertaken to monitor the total nitrogen content and the concentration of various forms of nitrogen that might be present in natural waters"--p. 1. Nitrogen gccst Water quality Goulden, P. D. Ryan, J. F. Canada. Energy, Mines and Resources Canada. Canada. Inland Waters Branch. Technical bulletin (Canada. Inland Waters Branch) no. 40. (CaOODSP)9.861115 PDF 822 KB https://publications.gc.ca/collections/collection_2018/eccc/En36-515-40-eng.pdf