Yet Yin Hee

Universiti Malaysia Terengganu | umt · Institute of Oceanography and Environment - INOS

Microplastic production due to storage and washing for re-use for commonly used food and drink containers in eat-in and takeaway catering was quantified and characterised using a combination of Nile Red staining, Scanning Electron Microscope imaging and infrared microscopy. The containers received ‘hot’ (water at 95 ºC added) or ‘cold’ (water with...

This multidisciplinary survey investigated the combined influence of riverine nutrient input, physical oceanography and monsoon season on water column primary production and nutrient cycling in east coast Peninsular Malaysia waters. Although the combined nutrient load of the regional rivers was similar to major rivers in the northern South China Se...

A seasonal study of phosphorus (P)-based nutrients was carried out in Sungai Setiu basin which is located in the southern region of the South China Sea (Malaysia) from July 2010 until June 2011. Parameters measured were dissolved inorganic P (DIP), dissolved organic P (DOP) and total particulate P (TPP). In addition, DOP concentration was size frac...

This study has been carried out in the Terengganu River basin, southern South China Sea (Malaysia), to determine the concentrations of phosphorus (P) and nitrogen (N) based nutrients and their possible sources. The dissolved inorganic nutrients in this river were found to be related to land use, where higher concentrations of dissolved inorganic nu...

This study aims to assess the influences of land use on nutrient concentrations in Kelantan river basin (southern South China Sea), in addition to the effects of monsoon seasons on nutrient concentrations. The dissolved inorganic and organic nutrients in this river were demonstrated to be related to land use during the study period. The middle and...

This paper explores the water quality status of the Kelantan River from the middle to lower reaches of the basin, during the dry and wet seasons, in order to provide a scientific reference for protecting local aquatic environments and managing river basin development in the future. Although research shows that this river basin is fell in Class I un...

The aim of this study was to determine the distribution of nitrogen (N)-and phosphorus (P)-based nutrients in the Besut River basin, Malaysia (South China Sea). The mean concentrations of ammonia, nitrate, total dissolved N and total particulate N were 43 µg/L N, 195 µg/L N, 485 µg/L N, 431 µg/L N, respectively. In contrast to N, lower mean concent...

Measurements of dissolved and particulate trace metals (Cd, Cu, Pb, Fe and Zn) were made on water samples collected from Lake Kenyir, Malaysia. Samples were taken monthly from the same stations during August-October 2010. Comparison with the National Water Quality Standards (NWQS), Malaysia showed that all dissolved trace metals were classified as...

The physico-chemical parameters were assessed in the Brunei bay water column in order to provide scientific data on these parameters during the dry and wet seasons. The parameters measured were salinity, temperature, dissolved oxygen, pH and total suspended solids. The results showed that most of the parameters showed seasonal variations between th...

The Malaysian Department of Environment-Water Quality Index (DOE-WQI) was determined for the Terengganu River basin which is located at the coastal water of the southern South China Sea between July and October 2008. Monthly samplings were carried out at ten sampling stations within the basin. Six parameters listed in DOE-WQI were measured based on...

A preliminary study of phosphorus and silicon compounds in lake water was conducted at the Tasik Kenyir, Terengganu, Malaysia. Monthly water samples were taken from August to October 2010. In general, higher concentrations of both nutrients were recorded at the western part of the lake. The results also showed that the nutrient concentrations were...

In general, higher concentrations of dissolved organic carbon (DOC) were measured at the downstream area of Setiu River basin, which associated with urban location. The high molecular weight (HMW, <100 kDa) DOC fraction generally was dominant consisting of 55–85 % of total DOC, within the DOC pool. Overall, HMW DOC dominance was associated with agr...

Preliminary study of phosphorus and nitrogen-based nutrients was conducted at the Kemaman River basin, Terengganu, Malaysia. Surface water samples were taken monthly from July-November 2009. In general, higher concentrations of nutrients were recorded at the station near to agricultural activities. The study also showed that the nutrients concentra...

A study was carried out in the Dungun River basin, Malaysia during the period oi March-July 2003 to determine the distribution of silicon (Si) compounds such as dissolved inorganic silicon (DISi), total dissolved silicon (TDSi) and total particulate silicon (TPSi). The chlorophyll-a (chl-a) levels were also measured. Results showed that the concent...