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First International Conference on MOLDAVIAN RISKS – FROM ...

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<str<strong>on</strong>g>First</str<strong>on</strong>g> <str<strong>on</strong>g>Internati<strong>on</strong>al</str<strong>on</strong>g> <str<strong>on</strong>g>C<strong>on</strong>ference</str<strong>on</strong>g> <strong>on</strong> <strong>MOLDAVIAN</strong> <strong>RISKS</strong> - <strong>FROM</strong> GLOBAL TO LOCAL SCALE<br />

16-19 May 2012, Bacau, Romania<br />

RISK ASSESSMENT OF HEAVY METALS ON AIR<br />

POLLUTANTS IN BACAU CITY<br />

Andreea Cocarcea 1 , Ema Faciu 1 , Iuliana Lazar 2 , Gabriel Lazar 1<br />

1 “Vasile Alecsandri" University of Bacau, Department of Envir<strong>on</strong>mental Engineering and<br />

Mechanical Engineering<br />

2 “Vasile Alecsandri” University of Bacau, Department of Chemical and Food Engineering<br />

Corresp<strong>on</strong>ding author: Iuliana Lazar, ilazar@ub.ro<br />

Abstract: Heavy metals released from different sources in urban envir<strong>on</strong>ment get adsorbed<br />

by humans <strong>on</strong> respirable particulate matter less than 10 μm in size (PM10) and are<br />

important from public health point of view. The compositi<strong>on</strong> of PM10 varies, as they can<br />

absorb and transfer a multitude of pollutants: metals, organic compounds, material of<br />

biologic origin, i<strong>on</strong>s, reactive gases, and the particle carb<strong>on</strong> core. The c<strong>on</strong>centrati<strong>on</strong>s of<br />

PM10, Pb, Cd and Ni from the air of Bacau City are measured daily by the Regi<strong>on</strong>al<br />

Agency of Envir<strong>on</strong>mental Protecti<strong>on</strong> Bacau (ARPM Bacau) and published in their m<strong>on</strong>thly<br />

reports. The relati<strong>on</strong>s and correlati<strong>on</strong>s between c<strong>on</strong>centrati<strong>on</strong>s of PM10, Pb, Cd and Ni<br />

measured during year 2011 and number of patients <strong>on</strong> disease categories registered in 2011<br />

were analyzed using descriptive statistics and bivariate correlati<strong>on</strong>s. It was shown a similar<br />

trend in variati<strong>on</strong> during the period of all four trimesters for PM10 and Pb, and a maximum<br />

for all type of particles during the trimester IV. Another method for analyze the data used<br />

in this study was the multivariate statistics which shown a dependency of 53% between<br />

PM10 and Pb, of 52% between PM10 and Ni and of 38% between PM10 and Cd with a<br />

significant factor less than 0.05. The influence of these air pollutants <strong>on</strong> human health was<br />

analyzed using statistic data provided by IBM SPSS 20.0 software <strong>on</strong> number of registered<br />

ill pers<strong>on</strong>s by disease type and trimester during year 2011. The str<strong>on</strong>gest Bivariate<br />

Correlati<strong>on</strong>s were shown between urological diseases and PM10 (R=0.60, p

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