* To educate students on what instruments they should use for sampling of water sample. * To expose the students the proper technique to measure the water. * To give the students experience with sampling of water sample. Introduction
Pollution can be defined as a harm to the environment which can cause a lot of bad consequences to human health, living resources and ecological. Thus, pollutants can be gain from many sources and can take many forms. The pollutants can contaminate land, water or air. In order to identify types of pollutants and the level of pollution, the first step that has to be taken is the collection of a representative sample. Sampling techniques varies depends on the type of sample. Water sampling is important in order to detect the pollution of organisms, hydrocarbon, metals or others pollutants in water. Sampling of most wastewaters and contaminated water is difficult due to their highly variable nature. To obtain an accurate assessment, samples have to be taken over a period of time period, over different sections of the water way and at different depths. Materials
* Water sampler
* 1 L sampling bottle
* Horiba water sampler
* Secchi dish
1. Sampling pond is divide into five area which is site 1,2, 3, 4 and 5. 2. One site is only assigned to each group.
3. Water sampler and secchi disk is use to measure the water. 4. Familiarize the sampling instruments are advised to each group. 5. The function of both instruments and their differences are discuss.
| 1| 2| 3| 4| 5|
pH| 7.3| 10.2| 7.5| 7.1| 7.4|
Turb| 4°| 5°| 5°| 6°| 4°|
DO| 4| 3.0| 2.5| 3.2| 3.1|
Temp| 30°c| 28°c| 30°c| 29°c| 28°c|
Clarity| 0.09 m| 0.1 m| 0.07 m| 0.05 m| 0.06 m|
Salinity| 0| 0| 0| 0| 0|
| Horiba Water Sampler| Secchi Disk|
Function| Used to measure and indicate the monitoring result...