Objective To establish a new method for determination of resorcinol in waste water. Methods The chemical luminescent reaction of KMnO4 and resorcinol in acid solution was studied by flow injection analysis. The related factors affecting chemical luminescent intensity were explored. The method for determination of resorcinol was established by flow injection analysis with chemical luminescence detection. Results The detection limit and linear range were 0.06?g/ml and 0.2-80 ?g/ml respectively. The relative standard deviation of 1.3% was obtained by 11 parallel determinations of 4.0?g/ml resorcinol. Conclusion This method was satisfactorily applied to determination of resorcinol in waste water.

Objective To provide scientific evidence for prevention and control program on dengue fever through analyzing the situation of dengue fever in China,from 2005 to 2007.Methods Data was collected from Internet-based National Notifiable Infectious Disease Reporting System,National Enhanced Dengue Fever Surveillance system and field investigation on dengue outbreaks,described and analyzed with descriptively and by SPSS statistical software.Results There was a total number of 1 623 dengue cases(including 1356 laboratory confirmed cases and 267 probable cases)and 1 death case reported in China from 2005 to 2007.Among the identified cases,151 were imported from foreign countries as the Southeast Asian countries,accounting for 9.3%,while the rest 1472 cases were reported from local infections,identified only in 9 cities from Guangdong and Fujian provinces.Data from the monitoring program on Aedes Mosquitoes indicated that:The indicators of BI from 84.6% of the sentinels were over 5,and BI from 72.2% of the sentinels were over 10.This index was especially at a higher level during summer in the southern areas of China.Aedes albopictus was found in all the sentinel sites while Aedes aegypti was only found in Hainan and in limited counties of Guangdong.No dengue virus was isolated from mosquito vectors collected from national sentinel sites, whereas positive results had been detected by PCR test in Guangdong province.Conclusion It was assumed that a sustainable local circulation of dengue virus had not yet been established successfully in Mainland China according to the surveillance data.However,more local outbreaks reported in Guangdong and Fujian with the wide distribution and high-level density of aedes mosquito,low antibody level in healthy population and the increasing number of imported dengue cases, there is a potential of Dengue outbreaks in southera China.An integrated mosquito vector monitoring and management system is needed in hish risk area to reduce the transmission of dengue fever.

Objective To analyze the surveillance data on hemorrhagic fever with renal syndrome (HFRS) including the epidemiological characteristics and trend of the disease,in 2010.Methods Descriptive methods were conducted to analyze the surveillance data in 2010 which were collected from the internet-based National Notifiable Disease Reporting System and 40 HFRS sentinels in China.Results There were 9526 cases of HFRS reported in 2010 in the country with an annual morbidity of 0.71/105,which was higher than that reported in 2009.And the case fatality rate in 2010 was 1.24％.During the year 2010,most cases were reported in spring and autumn-winter season,with November as the peak month.The proportion of cases reported in autumn-winter season was higher than that in spring.The number of cases reported in males was higher than that in females among all the age groups,and similar pattern of mortality could be seen in most of the age groups.The percentage of cases over 60 years old had increased in recent years.Farmers were still under the highest risk.Density and the virus-carrying rate of animal hosts,as well as the infection rate were relatively stable and similar to the previous findings.As to the prevailing species,Apodemus agrarius and Rattus norvegicus were still the most common and leading animal hosts.However,the dominant species in sentinel of Yunnan were Rattus flavipectus and Eothenomys miletus respectively,and a new hantavirus called LUXV was found,namely Eothenomys miletus.Conclusion HFRS cases were widely distributed in most provinces of China,but cases mainly focus on certain areas and present the nature of aggregation.The risk of outbreak could not be ruled out for variety of factors.Population characteristics and seasonal fluctuation had been changing.