Parts Per Million Conversion

Ada yang masih bingung dengan konversi PPM ???? Barangkali berikut ini bisa membantu..semoga.. ppm = parts per million PPM is a term used in chemistry to denote a very, very low  concentration of a solution. One gram in 1000 ml is 1000 ppm and  one thousandth of a gram (0.001g) in 1000 ml is one ppm. One thousandth of a gram is one milligram and 1000 ml is one liter,  so that 1 ppm = 1 mg per liter = mg/Liter. PPM is derived from the fact that the density of water is taken as  1kg/L = 1,000,000 mg/L, and 1mg/L is 1mg/1,000,000mg or one part in one million.  OBSERVE THE FOLLOWING UNITS 1 ppm = 1mg/l = 1ug /ml = 1000ug/L ppm = ug/g =ug/ml = ng/mg = pg/ug = 10 -6 ppm = mg/litres of water 1 gram pure element disolved in 1000ml = 1000 ppm PPB = Parts per billion = ug/L = ng/g = ng/ml = pg/mg = 10 -9 Making up 1000 ppm solutions 1. From the pure metal : weigh out accurately 1.000g of metal,  dissolve in 1 : 1 conc. nitric or hydrochloric acid,  and make up to the mark in 1 liter volume deionised water. 2. From a salt of the metal : e.g. Make a 1000 ppm standard of Na using the salt NaCl. FW of salt = 58.44g. At. wt. of Na = 23 1g Na in relation to FW of salt = 58.44 / 23 = 2.542g. Hence, weigh out 2.542g NaCl and dissolve in 1 liter volume  to make a 1000 ppm Na standard. 3. From an acidic radical of the salt : e.g. Make a 1000 ppm phosphate standard using the salt KH2PO4 FW of salt = 136.09 FW of radical PO4 = 95 1g PO4 in relation to FW of salt = 136.09 / 95 = 1.432g. Hence, weigh out 1.432g KH2PO4 and dissolve in 1 liter volume  to make a 1000 ppm PO4 standard.   Ppm (parts per million) to % (parts per hundred) Example: 1 ppm = 1/1,000,000 = 0.000001 = 0.0001% 10 ppm = 10/1,000,000 = 0.00001 = 0.001% 100 ppm = 100/1,000,000 = 0.0001 = 0.01% 200 ppn = 200/1,000,000 = 0.0002 = 0.02% 5000 ppm = 5000/1,000,000 = 0.005 = 0.5% 10,000 ppm = 10000/1,000,000 = 0.01 = 1.0% 20,000 ppm = 20000/1,000,000 = 0.02 = 2.0% (Parts per hundred) % to ppm Example: 0.01% = 0.0001 0.0001 x 1,000,000 = 100 ppm Ppm (parts per million) to % (parts per hundred) Example: 1 ppm = 1/1,000,000 = 0.000001 = 0.0001% 10 ppm = 10/1,000,000 = 0.00001 = 0.001% 100 ppm = 100/1,000,000 = 0.0001 = 0.01% 200 ppn = 200/1,000,000 = 0.0002 = 0.02% 5000 ppm = 5000/1,000,000 = 0.005 = 0.5% 10,000 ppm = 10000/1,000,000 = 0.01 = 1.0% 20,000 ppm = 20000/1,000,000 = 0.02 = 2.0% Parts per million - ppm -  is commonly used as a measure of small levels of pollutants in air, water, body fluids, etc. Parts per million is the mass ratio between the pollutant component and the solution and ppm is defined as ppm = 1,000,000 mc / ms         where mc = mass of component (kg, lbm) ms = mass of solution (kg, lbm) In the metric system ppm can be expressed in terms of milligram versus kg where 1 mg/kg = 1 part per million ppm can be also be expressed as: 1 ppm = 0.0001 % 1 000 ppm = 1‰ 10 000 ppm = 1% (Sumber : http://delloyd.50megs.com/ppm.html &  http://www.engineeringtoolbox.com/ppm-d_1039.html)