2. Experimental setup

#### 2.1 Site description

The city of Taj, Agra (27°10<sup>0</sup> N, 78°02<sup>0</sup> E) is located in the central part of northern India, about 204 km of south of Delhi in the Indian state of Uttar Pradesh. Agra is one of the most famous tourist spots of the country. The city is situated on the west bank of the river Yamuna 169 m above sea level. A part of the great northern Indian plains, Agra region experience a tropical climate. In winter the temperature ranges from 3.5 to 30.5°C and during summers which are hot and dry the temperature ranging from 32 to 48°C. The downward wind is south-southeast 29% and northeast 6% of the time in summer, and it is west-northwest 9.4% and north-northwest 11.8% of the time in winter. Agra has about 1.586 million population and the population density is about 1084 persons per square km (ORG, office of the registrar New Delhi, India: Ministry of Home Affairs, 2011). In this study real time series data for mass and number of coarse and fine particles were monitored in indoor

Mass and Number and Its Chemical Composition Distribution of Particulate Matter in Different… DOI: http://dx.doi.org/10.5772/intechopen.82801

environment of three different location (two shops, two commercial buildings and two offices) in different parts of Agra city (Figure 1A and B). Indoor PM5 was also collected from these sites for chemical characterization. The detailed description of these sites is shown in Table 1.
