scholarly journals Occurrence of red tides in Lake Nakaumi related to annual variation in water quality and C:N:P ratio of phytoplankton

2004 ◽  
Vol 65 (2) ◽  
pp. 69-82 ◽  
Author(s):  
Kenji KATO ◽  
Toshiyuki GODO ◽  
Akihiko KAGEYAMA ◽  
Ryo ASHIYA ◽  
Koji MISHIMA ◽  
...  
Keyword(s):  
Water Quality ◽  
Annual Variation ◽  
Red Tides ◽  
Lake Nakaumi ◽  
C:N:P Ratio

scholarly journals Impacts of Moriyama Dike opening on the water quality in summer at Honjo area, Lake Nakaumi

2020 ◽  
Vol 81 (3) ◽  
pp. 223-231
Author(s):  
Toshiaki ESUMI ◽  
Hiroshi KAMIYA ◽  
Toshikuni KATO ◽  
Yui NAKASHIMA ◽  
Hitoshi OHSHIRO ◽  
...  
Keyword(s):  
Water Quality ◽  
Lake Nakaumi

Seasonal and annual variation of Tigris River’s water quality using physicochemical parameters within Baghdad city

2021 ◽  
Author(s):  
Omar Anmar Almoula ◽  
Khalid Adel Abdulrazzaq ◽  
Athraa Hashim Mohammed ◽  
Rami R. Alani
Keyword(s):  
Water Quality ◽  
Physicochemical Parameters ◽  
Annual Variation

Annual variation patterns of the effluent water quality from a green roof and the overall impacts of its structure

2018 ◽  
Vol 25 (30) ◽  
pp. 30170-30179 ◽  
Author(s):  
Hongxiang Chai ◽  
Yue Tang ◽  
Xiaojie Su ◽  
Weijie Wang ◽  
Hao Lu ◽  
...  
Keyword(s):  
Water Quality ◽  
Annual Variation ◽  
Green Roof ◽  
Effluent Water ◽  
Variation Patterns

scholarly journals Impact of the opening of Moriyama Dike on water quality and aquatic fauna in Honjo Area of Lake Nakaumi, Japan

2020 ◽  
Vol 81 (3) ◽  
pp. 205-221
Author(s):  
Masaki KUWABARA ◽  
Hiromichi KUWABARA ◽  
Takashi KUWABARA ◽  
Toshiaki ESUMI ◽  
Yu TABAYASHI ◽  
...  
Keyword(s):  
Water Quality ◽  
Aquatic Fauna ◽  
Lake Nakaumi

scholarly journals Annual variation of fluoride level in drinking water in certain regions of the Republic of North Macedonia

2019 ◽  
Vol 65 (01) ◽  
pp. 83-93
Author(s):  
Lirije Hamiti Alil ◽  
Rejhan Muhamed Djumkar ◽  
Mihail Kochubovski ◽  
Tanja Petreska Ivanovska ◽  
Zoran Zhivikj ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Annual Variation ◽  
Dental Health ◽  
Fluoride Concentration ◽  
Good Health ◽  
Lower Amount ◽  
Fluoride Level ◽  
Wide Range ◽  
The Republic

Fluoride levels in drinking water varies in a wide range, which mainly depends on the geological and physical-chemical characteristics of the soil, the porosity of the mineral rocks in the region, the temperature, and the depth of the aquifer. When present at appropriate levels is recommended for prevention of dental caries, but high levels may provoke fluorosis. Hence, determination of fluoride concentration considering the balance between benefits and risks to health is an important parameter for the water quality assessment. In this study, the annual variation of fluorides in drinking water comprising different regions of the Republic of North Macedonia was analyzed. The total dissolved fluoride was determined potentiometrically using a fluoride combined ion-selective electrode (ISE) and a pH meter with an enlarged millivolt (mV) scale. WHO recommended fluoride in drinking water to range from 0.5 to 1.5 mg/L in order good health of teeth to be provided. The results of this study indicated that analyzed 104 samples of water contained fluorides in lower quantities compared to upper safety limit established by our national legislation and Guidelines for Drinking Water Quality of the WHO. During the summer period, in the majority of the samples fluoride levels were further reduced compared to other seasons, which may due to a lower amount of rain. With regard to this, the obtained data for relatively low fluoride levels in water may serve to dentists both in clinical practice and public dental health, implying current information necessary for advising on fluoride supplementation to people. Keywords: Fluoride, drinking water, fluoride analysis, potentiometric method

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