Laser induced breakdown spectroscopy (LIBS) is a latest advancement in the field of analytical techniques. it can perform real time analysis with detection up to ppm levels. For detection of heavy metals in ambient air in particulate matters different techniques are used widely used technique is atomic absorption spectroscopy which is sequential, time consuming and expensive. For these reasons LIBS was used. A rapid method was developed in which LIBS was optimized to detect cadmium, zinc and lead on filter paper. Calibration curves were prepared for quantitative analysis. Then real samples...