| Popis: |
The presence of books on the shelves may take a long time depending on the users of the books. The book may remain for months and even years without use, especially in public libraries, making them prone to accumulation of dust, which may carry various harm effects on book users' health. The aim of this study was to assess the quality of the accumulated dust on the bookshelves in one of the largest libraries of University of Mosul "Central Library" where samples of dust were collected on books and characterized by difficulty handling because of dispersal with any movement. The samples were transferred to the molecular biology and ecology laboratories at the College of environmental science and technology to test the estimation of some heavy metals concentrations" Cu, Co, Fe, Zn, Pb and Cd" by using atomic absorption system. The results showed that these heavy metals were found in accumulated dust. This result could hide a hazardous impact especially if they become accumulated in the body, also PCR technique was used to investigate some microorganisms which affect public health. The results revealed the diagnosis of Alternariaalternata fungi, which causes many types of allergies that did not observed in direct plate culture as well as the existing of E. coli fecal bacteria, which caused many diseases. The PCR technique is very sensitive method in diagnosing a low level of microorganisms trace. The dust accumulation on bookshelves is unhealthy environment for workers and users by containing many pathogens and toxic metal elements if the user deal with them for a long time, and in the light of these results, it is recommended especially for the workers wear masks at work as well as removing the dust regularly and allergy tests to avoid the chronic allergy cases. |
