‘Current test’ for water pollution

Mar 04, 2014
Sg Langat where the water sampling was done. Credit: Tianyake / Flickr

A simple test of electrical conductivity could be used as a parameter for water quality, according to new research published in the Journal of Tropical and Agricultural Sciences. The research investigated whether this single parameter could be used instead of the more complex current tests used in Malaysia to measure water pollution. The author believes the test should be included in the water quality index in the future.

Currently, the Malaysian Water Quality Index (WQI) is based on six water parameters. This allows a lot of data to be broken down into six measures, but there are weaknesses, and it is certainly not comprehensive. The use of conductivity tests can inform of sulfate, bicarbonate, and chlorides of calcium, magnesium, and sodium in water, and is used in some still water lakes, but isn't currently used in running rivers.

Yap CK, from Universiti Putra Malaysia, took nine periodic samplings at eight sites along the Malaysian Langat river, including both polluted downstream and unpolluted upstream sites. The results show that there are consistently higher levels of in the more polluted downstream, and this was in line with two current measures – dissolved oxygen and suspended solids. Since it is much easier and faster to measure electrical than these two factors, its use as a single indicator of in tropical rivers is proposed.

Explore further: Peat bog restoration work holds back water

add to favorites email to friend print save as pdf

Related Stories

Peat bog restoration work holds back water

Feb 18, 2014

Restoration of peat bogs on Exmoor has resulted in a third less water leaving the moorland during heavy rainfall compared with three years ago, a new study involving the University of Exeter shows.

Haze shrouds Malaysian capital amid drought

Mar 04, 2014

Haze shrouded Malaysia's capital and its surroundings on Tuesday, causing "unhealthy" air quality due to fires from a drought that has led to water rationing.

Fuzzy logic water quality

Apr 17, 2008

A fuzzy logic approach to analyzing water quality could help reduce the number of people in the developing world forced to drink polluted and diseased water for survival. Writing in a forthcoming issue of the International Jo ...

Drought-hit Malaysian state rations water

Feb 25, 2014

Authorities began rationing water to thousands of households in Malaysia's most populous state Tuesday, as a dry spell depletes reservoirs across a country normally known for its steady tropical downpours.

Dangerous chemicals found in south China river

Jul 06, 2013

(AP)—Residents and water plants along a river in southern China that is used as a drinking source have been warned not to use the river's water after authorities detected excessive amounts of two dangerous chemicals.

Recommended for you

Rising anger as Nicaragua canal to break ground

2 hours ago

As a conscripted soldier during the Contra War of the 1980s, Esteban Ruiz used to flee from battles because he didn't want to have to kill anyone. But now, as the 47-year-old farmer prepares to fight for ...

Hopes, fears, doubts surround Cuba's oil future

Dec 20, 2014

One of the most prolific oil and gas basins on the planet sits just off Cuba's northwest coast, and the thaw in relations with the United States is giving rise to hopes that Cuba can now get in on the action.

New challenges for ocean acidification research

Dec 19, 2014

Over the past decade, ocean acidification has received growing recognition not only in the scientific area. Decision-makers, stakeholders, and the general public are becoming increasingly aware of "the other carbon dioxide ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.