Determination of bromide and iodide in formation water by spectrophotometric method
Learning the nature of formation water helps us evaluate the prospects of oil as well as identify oil and water reservoirs. Among the ions in the composition of the formation water, bromide and iodide are two important elements which reflect the environment and the degree of mineralisation and reservoir closure. The authors focus on determining the concentration of bromide and iodide in the formation water using the spectrophotometric method (UV-Vis). This method was mentioned in the “Standard Methods for Water and Wastewater”, however, it was applied in formation water analysis for the first time in Vietnam. The method allows a low detection limit of 0,1mg/L, with the reproducibility of 10 sample analysis and the deviation in comparision to 10 samples in control experiments being lower than 5%. The results are verifi ed with other laboratory’s ones and thereby allow a wide use in formation water analysis.
Hoàng Đình Tiến. Địa chất dầu khí và phương pháp tìm kiếm, thăm dò, theo dõi mỏ. Nhà xuất bản Đại học Quốc gia Tp. Hồ Chí Minh. 2006: trang 243 - 250.
Vũ Thu Hiền. Giáo trình thủy văn đại cương. Đại học Mỏ - Địa chất. 2010.
American Public Health Association (APHA), American Water Works Association (AWWA), Water Environment Federation (WEF). 4500-Br- B. Phenol red colorimetric method. Standard Methods for the Examination of Water and Wastewater (20th edition). 1999.
American Public Health Association (APHA), American Water Works Association (AWWA), Water Environment Federation (WEF). 4500-I- B. Leuco crystal violet method. Standard Methods for the Examination of Water and Wastewater (20th edition). 1999.
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