ABSTRACT
OBJECTIVE: To analyze the inter-laboratory comparison results of occupational hygiene laboratories of Guangdong Province. METHODS: The 42 laboratories that continuously participated in the inter-laboratory comparison of occupational hygiene technical service institutions in Guangdong Province from 2014 to 2018 were selected as the research subjects Guangdong Occupational Health Test Center from 2014 to 2018 were selected by convenient sampling method. The data of detection of organic compounds, metal element, non-metal element in the workplace air, detection of metal element in biological materials, and the detection of free silica in dust were analyzed. The results were statistically analyzed by four-point robust statistical technique. RESULTS: From 2014 to 2018, a total of 1 205 items of sample detection results were submitted in these 5 years. The qualified rate of sample test was 92.4%(1 114/1 205) in these laboratories. The qualified rate of test of organics in workplace air, metals in workplace air, inorganic non-metals in workplace air, metals in biological materials and free silica in dust were 93.3%, 94.4%, 91.6%, 84.4% and 91.8% respectively. There was no significant difference in the qualified rate of sample test between the laboratories in the Pearl River delta in Guangdong Province and the laboratories in other regions the laboratories in other regions(92.8% vs 89.6%, P>0.05). There was no significant difference in the qualified rate of sample test among the occupational disease prevention and treatment institute, center for disease control and prevention and private laboratories(93.1% vs 93.6% vs 89.0%, P>0.05). Among the 91 unqualified items, 35 items were │z score of inter-laboratory(z_B)│≥ 3(38.5%), 40 items were │z score of within-laboratory(z_w)│≥ 3(44.0%), and 16 items were│z_B│≥ 3 and │z_w│≥ 3(17.6%). CONCLUSION: The laboratories in Guangdong Province that participated in the inter-laboratory comparison of occupational health test for 5 consecutive years have a relatively high level of occupational health testing, and the test results are accurate.
ABSTRACT
OBJECTIVE: To analyze the results of inter-laboratory comparison among occupational hygiene laboratories. METHODS: A convenient sampling method was used. The laboratories participating in the inter-laboratory comparison organized by the Guangdong Occupational Health Test Center from 2013 to 2017 were selected as study subjects. The data of detection of organic compounds, metal element, inorganic non-metal element in workplace air, detection of metal element in biological materials, and detection of free silica in dust were analyzed. The results were statistically analyzed by four-point robust statistical technique. RESULTS: A total of 615 laboratories(times) participated in the comparison, and 2 785 items of sample detection results were submitted from 2013 to 2017.Among them, a total of 2 484 items were tested qualified and the sample test qualified rate was 89.2%. The test qualified rates of organics in workplace air, metals in workplace air, inorganic nonmetals in workplace air, metals in biological materials and free silica in dust were 91.1%, 92.0%, 86.6%, 80.4% and 85.0%, respectively. The sample test qualified rates of the laboratories in different regions from high to low were: the laboratories Pearl River Delta region in Guangdong Province, the laboratories in non-pearl river delta region in Guangdong Province and the laboratories outside of Guangdong Province were 91.6%, 87.2% and 72.6%(P<0.01), respectively. The sample test qualified rate of the public laboratories was higher than that of the private laboratories(90.3% vs 87.0%, P<0.05). CONCLUSION: The accuracy of the occupational hazard factor test in the participating laboratories needs to be improved. It is necessary to further strengthen the investment, supervision and management to non-pearl river delta region laboratories and private laboratories in Guangdong Province.
ABSTRACT
OBJECTIVE: To explore the feasibility of using network system to carry out desktop health emergency response exercise for sudden poisoning incidents,and to understand the emergency response capability on sudden poisoning incident in Guangdong Province. METHODS: A chemical poisoning incident caused by drinking polluted water was simulated. Eight questions were designed in 4 sections including the emergency report,response,disposal and strain capacity to the emergency. A total of 10 teams from prefecture-level city in Guangdong Province answered through the desktop network exercise system designed by National Institute of Occupational Health and Poison Control. Meanwhile,the experts judged score using this system. RESULTS: Ten teams were familiar and adapted to the network system in a relatively short period of time. The scores of emergency report,response,disposal and strain capacity on emergency were(14. 9 ± 2. 3),(6. 0 ±2. 2),(20. 7 ± 4. 1) and(13. 2 ± 3. 5),respectively. The score rates of above 4 sections were(74. 5 ± 11. 5) %,(50. 4 ±18. 7) %,(43. 5 ± 8. 5) % and(66. 2 ± 17. 5) %,respectively. The score rate of emergency report was higher than that of response and disposal( P < 0. 05). The score rate of strain was higher than that of disposal( P < 0. 05). The total score of desktop exercises of the 10 teams was(55. 0 ± 8. 0),which was low on the whole. CONCLUSION: The network system can be used for desktop exercise for sudden poisoning incidents. There is a weak link in the health emergency response capacity of sudden poisoning incidents in Guangdong Province and the capability of emergency response and disposal should be strengthened.