TESTS SANITARY — the parts of substrates which are selected for analyses from objects of the environment for the purpose of data acquisition for a gigabyte. estimates of all set of indicators of the studied material.
Items of page select from free air, air of workrooms, residential and public buildings, drinking water and sources of drinking water supply, cultural and community and recreational water use, drain waters, the soil of the inhabited places, territories of agricultural land use, foodstuff of plant, animal origin, ready food. Results of analyses of P. of page are used by specialists of the state sanitary inspection for assessment of a possible adverse effect of environmental factors on the state of health and a dignity. conditions of accommodation of the population and for development of recreational actions (see. Sanitary inspection ).
In P. pages define the qualitative and quantitative content of chemical substances, bio-elements, bacteria, viruses and fungi, eggs of helminths. The item of page needs to be selected in a pure dry container: faience banks, bottles from chemical resistant glass with covers, ground stoppers or plastic bags. For bacterial. researches of test select the sterile tool in sterile ware. All tests shall be sealed and have the label with the indication of the name and number of test, date and hour of selection. During the sampling the statement of dredging of test is drawn up, in Krom specify when where also who took samples, their number, a way of selection, the purpose and character a lab. researches.
The selected tests place in vibroudarozashchitny isothermal containers and bring special-transport to laboratory where they are stored under certain conditions depending on research objectives.
P.'s selection by the village of free air, air of workrooms, residential and public buildings make by an aspiration method with use of liquid absorbers and special filters. During the definition, e.g., stretch to the maximum one-time concentration of dust in free air via the filter up to 2 m3 of air, and for average daily — not less than 6 m3. For P. the page on radioactive and carcinogenic substances is stretched to 1000 m3 of air. In rooms of different function tests select at the height of 1,5 m from a floor surface. Sampling of air for bacterial. researches make by means of bakterioulovitel of various designs (see Samplers). Sampling of water (see) is carried out from water taps, columns, from open reservoirs in the place of a water intake. In the analysis of drain waters select one-time and average during the shift or days of test at an interval of one hour.
Tests of the soil (see) select from a surface and at a depth up to 20 cm of 2 — 3 platforms of 25 sq.m in size on the diagonal of the site (3 points) of a pla konvertoobrazno (5 points). Make the average mixed sample weighing up to 2 kg of the selected tests. At the same time sterile scoop select in a sterile can from the same points 100 — 150 g of the soil, mix and make average sample. From it select and place in sterile Petri dishes 100 — 150 g of the soil for bacterial. and gelmintol. researches.
Item of page of foodstuff (see) select for the purpose of control of their quality. At big parties of products of test from different parts of party mix and make the average sample characterizing all party. Tests of loose foodstuff select the bag probe from sides and the middle of a bag and make average sample. Items of page of liquid products before capture of a sample carefully mix and make the mixed average sample. Items of page of meat cut out from a muscular layer of a hip and a neck of ink. Samples of fish are taken from the middle of a barrel or a box.
Items of page of ready food in network of public catering select directly from a table of the consumer. Tests of foodstuff, waters, soils on radiocontamination subject to radiation control (see).
Gigabyte. requirements to carrying out researches P. of page consist in respect for the general principles and rules of the analysis, in particular preservations of sterility at all stages of a bacteriological and helmintologic research, observance of terms of their carrying out. Disturbance of these requirements reduces reliability of results of the analysis.
Assessment of results of researches of tests is carried out by comparison with the existing GOST and a gigabyte. standards.
Bibliography: Minkh A. A. Methods of hygienic researches, M., 1971; Perelygin V. M. and Different shch and to V. V. Gigiyena of the soil and sanitary cleaning of the inhabited places, M., 1977; Petrovsky K. S. Gigiyena of food, M., 1975; Guide to control of pollution of the atmosphere, L., 1979; The Unified methods of the analysis of waters, under the editorship of Yu. Yu. Lurye, TO., 1973.
V. M. Perelygin.