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Objective To determinate the heavy metal cadmium content in rice to ensure food safety.Methods Several brands and batch numbers of rice were collected and divided into groups A and B.Group A contained 24 pieces of rice from the canteens,and group B involved in 22 pieces from the farm product markets.Cadmium content in rice was detected quantitatively with X-ray fluorescence spectrometer,and then evaluated according to GB 2762-2012 which determined rice was not qualified in case cadmium content was more than 0.2 mg/kg.Results Group A had cadmium content between 0.00 and 0.477 mg/kg,the times of ultra standard being 2.385 and the disqualification rate being 29.2% (7/24),and group B had cadmium content between 0.065 and 0.619 mg/kg,the times of ultra standard being 3.095 and the disqualification rate being 68.2% (15/22).Excessive cadmium content in rice occurred in both canteens and markets,while the canteens was better than the markets.Conclusion X-ray fluorescence spectrometer detects cadmium content in rice rapidly and simply,and is worthy promoting in elementary facilities.
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Objective To study the cryoprecipitate effect of local external treatment of anal fistula surgical wound repair.Methods A total of 95 cases of low simple anal fistula patients was chosen, and was divided into three groups according to random number table method.The cryoprecipitate group (n =32 cases) began with cryoprecipitate dressing (2 layer) even to fill in a wound, once per day.The Kangfuxin group (n =32 cases) used Kangfuxin solution.The exposed burn ointment (MEBO) group (n =31 cases) used MEBO to cover the wound.The healing time, postoperative wound healing rate, the granulation tissue growth, new epithelial coverage, and adverse reactions were observed.Results The cryoprecipitate group in 14 d and 21 d had postoperative wound healing rate (60.97 ±4.20)% and (97.69 ± 1.79)% ,wound healing time (21.31 ±2.08)days;it had higher healing rate and shorter healing times compared to other two groups (P <0.05).Wound repaired more neatly;and 14d and 21d after the operation, wound granulation tissue growth rate [(61.06 ± 13.29) % and (97.63 ± 2.81) %] and new epithelial coverage [(33.03 ±4.15)% and (94.97 ±4.36)%] were more than the control groups (P <0.05) with less adverse reactions relative to control groups.Conclusions The cryoprecipitate contained in the composition has a strong biological activity.It can promote the wound tissue cell growth, and promote the wound repair.