Defining an exposure-response relationship for suspended kaolin clay particulates and aquatic organisms: Work toward defining a water quality guideline for suspended solids

2015 ◽  
Vol 34 (4) ◽  
pp. 907-912 ◽  
Author(s):  
Andrew K. Gordon ◽  
Carolyn G. Palmer
Keyword(s):  
Water Quality ◽  
Suspended Solids ◽  
Aquatic Organisms ◽  
Kaolin Clay ◽  
Response Relationship ◽  
Exposure Response ◽  
Quality Guideline ◽  
Water Quality Guideline

scholarly journals Water Quality Assessment of Tributaries of Batang Baleh in Sarawak Using Cluster Analysis

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Teck-Yee Ling ◽  
Chen-Lin Soo ◽  
Teresa-Lee-Eng Heng ◽  
Lee Nyanti ◽  
Siong-Fong Sim ◽  
...  
Keyword(s):  
Water Quality ◽  
Cluster Analysis ◽  
Total Phosphorus ◽  
Organic Nitrogen ◽  
Suspended Solids ◽  
Oxygen Demand ◽  
Aquatic Organisms ◽  
Water Quality Assessment ◽  
Upstream Region ◽  
Nitrite Nitrate

Assessment of river water quality is essential as it provides the knowledge required to make informed decisions. Therefore, water quality was determined at 15 tributary stations located along the Batang Baleh, Sarawak. Results of the study indicate that all tributaries were well-aerated (≈ 7.7 mg/L) with pH (≈ 7.3) and conductivity (≈ 37.3 μS/cm) values falling within acceptable ranges. However, there were tributaries that showed very high turbidity (> 1000 NTU) and suspended solids (> 800 mg/L) which were contributed by the soil erosion from logging activities in the watershed. Tributary stations associated with logging activities also showed significantly higher total phosphorus and organic nitrogen. Cluster analysis demonstrated that water quality at tributary stations along the Batang Baleh exhibited a longitudinal variation from upstream to downstream regions, particularly, dissolved oxygen, five-day biochemical oxygen demand, and nitrite-nitrate nitrogen, which were found higher in upstream region and steadily decreased towards the downstream region. Two stations located at Sg. Serani and Sg. Melatai were distinct from the other stations with the highest concentrations of turbidity, total suspended solids, organic nitrogen, and total phosphorus. Thus, there is an urgent need to reduce the pollutants in the tributaries of Batang Baleh for the health of the sensitive aquatic organisms.

scholarly journals Deriving a water quality guideline for protection of aquatic communities exposed to triclosan in the Canadian environment

2018 ◽  
Vol 14 (4) ◽  
pp. 437-441 ◽  
Author(s):  
Katie L Hill ◽  
Roger L Breton ◽  
Gillian E Manning ◽  
R Scott Teed ◽  
Marie Capdevielle ◽  
...  
Keyword(s):  
Water Quality ◽  
Aquatic Communities ◽  
Quality Guideline ◽  
Water Quality Guideline

scholarly journals Adjusting Tropical Marine Water Quality Guideline Values for Elevated Ocean Temperatures

2019 ◽  
Vol 54 (2) ◽  
pp. 1102-1110 ◽  
Author(s):  
Andrew P. Negri ◽  
Rachael A. Smith ◽  
Olivia King ◽  
Julius Frangos ◽  
Michael St. J. Warne ◽  
...  
Keyword(s):  
Water Quality ◽  
Marine Water ◽  
Guideline Values ◽  
Quality Guideline ◽  
Water Quality Guideline

Water quality trends in the last decade for ten watersheds dominated by diffuse pollution in Québec (Canada)

2012 ◽  
Vol 65 (6) ◽  
pp. 1095-1101 ◽  
Author(s):  
M. Patoine ◽  
S. Hébert ◽  
F. D'Auteuil-Potvin
Keyword(s):  
Water Quality ◽  
Diffuse Pollution ◽  
Fecal Coliforms ◽  
Poultry Feed ◽  
Quality Guideline ◽  
Water Quality Trends ◽  
Three Rivers ◽  
Future Work ◽  
Water Quality Guideline ◽  
Total P

The aim of this work is to evaluate and discuss river water quality trends over the last decade in ten watersheds where diffuse pollution represents more than half of the annual load of phosphorus (P) and nitrogen (N). Trend analyses taking into account flow data indicate a significant reduction of total P in eight rivers, of ammonia N in five rivers, of nitrate + nitrite in four rivers, of total filtered N in three rivers and of suspended solids in two rivers. An increase of turbidity was observed in four rivers and, for fecal coliforms, no trends. P decrease can be explained by reduced mineral P inputs on cropped lands related to means such as agro-environmental fertilization plans and addition of phytase in pig and poultry feed. However, for seven of them, median P concentrations remain at least two times greater than the Québec water quality guideline for protection of rivers against eutrophication. Concentrations of other parameters remain problematic in some rivers too. These results indicate the need to continue the efforts for further diffuse pollution reduction. Future work should better quantify actions taken at the watershed scale to reduce diffuse pollution.

Water quality criteria for total suspended solids (TSS) in urban wet-weather discharges

2006 ◽  
Vol 54 (6-7) ◽  
pp. 355-362 ◽  
Author(s):  
L. Rossi ◽  
R. Fankhauser ◽  
N. Chèvre
Keyword(s):  
Water Quality ◽  
Urban Areas ◽  
Suspended Solids ◽  
Quality Criteria ◽  
Aquatic Organisms ◽  
Total Suspended Solids ◽  
Water Quality Criteria ◽  
Combined Sewer Overflows ◽  
Wet Weather ◽  
Rain Events

Total suspended solids (TSS) from combined sewer overflows (CSOs) and stormwater discharges represent a crucial parameter for evaluating wet-weather pollution in urban areas. In fact, the increase of TSS in water during rain events can have ecotoxic effects on aquatic organisms. Furthermore, major potentially harmful substances such as heavy metals, PAHs and organic matter are adsorbed onto TSS and later settle on sediment. Water quality criteria for TSS consequently enable the risk of wet-weather pollution to be assessed, for instance to avoid detrimental effects on aquatic organisms. The criteria proposed in this study cover the short-term impact of TSS on fish (acute quality criteria AQC), taking into account the duration of their exposure in the receiving water. The concentration-exposure duration-effect curve proposed here thus predicts “ill effects” on fish for different exposure times and TSS concentrations. The ecotoxic effects of adsorbed pollutants are also taken into account with an additional safety factor. We implement this TSS criteria in a software that allows us to estimate the number of rain events that exceed a given morbidity threshold for fishes per year.

Assessing the Toxicity of Mine‐Water Mixtures and the Effectiveness of Water Quality Guideline Values in Protecting Local Aquatic Species

2021 ◽  
Author(s):  
Melanie A. Trenfield ◽  
Ceiwen J. Pease ◽  
Samantha L. Walker ◽  
Scott J. Markich ◽  
Chris L. Humphrey ◽  
...  
Keyword(s):  
Water Quality ◽  
Mine Water ◽  
Aquatic Species ◽  
Guideline Values ◽  
Quality Guideline ◽  
Water Quality Guideline

Derivation of a water quality guideline for aluminium in marine waters

2014 ◽  
Vol 34 (1) ◽  
pp. 141-151 ◽  
Author(s):  
Lisa A. Golding ◽  
Brad M. Angel ◽  
Graeme E. Batley ◽  
Simon C. Apte ◽  
Rick Krassoi ◽  
...  
Keyword(s):  
Water Quality ◽  
Marine Waters ◽  
Quality Guideline ◽  
Water Quality Guideline
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