tailieunhanh - Nguyên nhân gây ra hiện tượng “Đầm nước màu hồng” tại đầm chứa nước trước cống số 6 xã Tân Hải, huyện Tân Thành, tỉnh Bà Rịa – Vũng Tàu

Bài viết Nguyên nhân gây ra hiện tượng “Đầm nước màu hồng” tại đầm chứa nước trước cống số 6 xã Tân Hải, huyện Tân Thành, tỉnh Bà Rịa – Vũng Tàu được nghiên cứu nhằm đánh giá chất lượng môi trường nước và tìm ra nguyên nhân gây ra hiện tượng này. | TNU Journal of Science and Technology 227 14 85 - 92 THE CAUSES OF PINK-PURPLE WATER IN THE LAGOON AT GATE NO. 6 IN TAN HAI COMMUNE TAN THANH DISTRICT BA RIA VUNG TAU PROVINCE Pham Thanh Luu1 2 Ngo Xuan Quang1 2 Tran Thanh Thai1 Tran Thi Hoang Yen1 Nguyen Thi My Yen1 Dang Son Hai3 Tran Thuong Tho4 Tran Ngoc Dang5 1Institute of Tropical Biology - VAST 2Graduate University of Science and Technology - VAST 3Ba Ria-Vung Tau Department of Natural Resources and Environment 4Ba Ria-Vung Tau Environmental Protection Agency 5University of Medicine and Pharmacy ARTICLE INFO ABSTRACT Received 08 7 2021 Recently the pink-purple water in the lagoon at gate no. 6 in Tan Hai commune Tan Thanh district Ba Ria Vung Tau province has attracted large attention Revised 27 8 2022 from local governments and public media. This study aimed to assess the water Published 30 8 2022 quality and find out the causes of such problem. Physicochemical parameters including BOD5 COD TSS NO3 NO2- NH4 và PO43- . and several heavy KEYWORDS metals such as mercury lead zinc cadimi and xyanua were used to assess water quality. Phytoplankton composition was determined by microscopy Algal bloom observation and the phytoplankton density was estimated by using an Improved Dunaliella salina Neubauer Chamber. Our results indicated that water trophic state is being eutrophic or hypereutrophic. The pink-purple water was caused by the Eutrophication domimant of the green algae Dunaliella salina. D. salina is pink becaused it Green algae accumulated very high levels of a carotenoid pigment called β-carotene. To Pink-purple water better understand the growth and development of the D. salina more in-depth studies on environmental conditions regulating the development of D. salina as well as mass cultured to exploit β-carotene and glycerol pigments for aquaculture pharmaceuticals and dietary supplement are well recommended. NGUYÊN NHÂN GÂY RA HIỆN TƯỢNG ĐẦM NƯỚC MÀU HỒNG TẠI ĐẦM CHỨA NƯỚC TRƯỚC CỐNG SỐ 6 XÃ TÂN HẢI .