The pH scale ranges from 0 to 14: Acidic water has a pH lower than 7. 0000007043 00000 n )�`v�^�Ŷ����Bl� 26 27 before, at, and after the endpoint. 0000012489 00000 n A water body with a very low density of phytoplankton per unit area is a non-productive water body. The pH value of a water sample can be determined by indicator dye method and electrometric method using a pH meter. startxref 0000002506 00000 n हिंदी Glass rod or dropper used for one sample should be washed thoroughly before using it for the other samples. 0000001514 00000 n 0000001373 00000 n Temperature has a significant effect on pH measurement (1,2). The pH is a measure of the relative amount of free hydrogen and hydroxyl ions in an aqueous solution. 52 0 obj<>stream RELATIONSHIP WITH WATER-QUALITY PARAMETERS The pH is of major importance in determining the corrosivity of water. 2PH = 14-->pH = 7 for acids PH ranges from 1 to 7 and for base PH ranges from8 to 14 There Are Two methods to determine the PH values of given water sample, These water bodies have high amounts of nutrients and dissolved oxygen and bear large number of organisms at different trophic levels. 0000011695 00000 n 0000006104 00000 n Turbidity can be measured using several methods. Most natural waters possess the pH values ranging from 5.0 to 8.5. %PDF-1.4 %���� Funded by MeitY (Ministry of Electronics & Information Technology), English The pH value of a water sample can be determined by indicator dye method and electrometric method using a pH meter. The most acidic substances have a pH of 0. Mix the test tubes with the soil solution slowly Now into a clean and dried two test-tube, arrange a funnel spread covered with a filter paper. The pH of a solution is a measure of the molar concentration of hydrogen ions in the solution and as such is a measure of the acidity or basicity of the solution. 0000005735 00000 n Rain water have a pH value of 5.4 to 6.0 which then reacts with the soils and minerals causing the reduction in H+ ion concentration and thus the water may become alkaline with a pH 0f 8.0-8.5. endstream endobj 27 0 obj<> endobj 28 0 obj<> endobj 29 0 obj<>/ProcSet[/PDF/Text]/ExtGState<>>> endobj 30 0 obj<> endobj 31 0 obj<> endobj 32 0 obj<> endobj 33 0 obj<> endobj 34 0 obj<> endobj 35 0 obj<> endobj 36 0 obj<> endobj 37 0 obj<>stream 0000007198 00000 n In crater lakes such as Lake Nyos or Lake Monoun, the pH rapidly drops from a surface level around 7 to 5.5 below 60 m (at the thermocline and chemocline) ²⁶. 0000001114 00000 n The fruit juice sample should also be fresh to get the proper pH values. x�b```�)�L[@��(�����!�A�a�����600��[ W��P��)��SƂ��}��ٔž+Dj���X(ɤl��E< ��4X�a&�s@Z���"J�,R�. Some of the characteristics that control the quality of water are the turbidity of water, pH of water and different types of plants and animals and their density. Differences in pH levels between water strata are due to increased CO2 from respiration and decomposition below the thermocline. മലയാളം 0000001194 00000 n Students understand the term Secchi’s disk. Take roadside soil from the watch glass and dissolve it into the beaker containing water to make soil solution. 0000005883 00000 n Nitrogen and phosphorus are nutrients that induce plant growth in standing water bodies, so increased concentrations tend to result in increased plant growth. For routine purposes, the indicator dye method, using universal pH indicator solution or paper strips containing the pH indicators, is used. 0000000016 00000 n ��qYe'%���2�e��&�:E��)4d+[�$S�0�V ~` �v. H�dUKs�6��W������Jڦ��IcM}�� ��Ć"]�����.��,5��]����_$���f�z��& a�[%���W��4�B�B�1�W1��W���8������47'v��i �k�v:�A� |�E�m>��X�ۿ�Y&9DR��)�tQ�e�a��3#��p�?0�0�p7�zj�~�;�:�����#�k�&����DQ9vGF��yo�y�5��*E�@%���o_�L�5���o��I�������șEl�5aˁ�#ž�~�B����?��+� ��UKd�IEh��ݩ�.F��.