RESUMEN
Body donation is the main source of human specimens preparation in medical universities and colleges. The low donation rate in China restricts the improvement of basic medical research and clinical treatment seriously. In the investigation, deep-rooted traditional concepts, unsound legal system, and inadequate government propaganda have become the major factors influencing body donation. Combined with the practice of body donation in the localities, this study puts forward some measures to promote the body donation, such as giving targeted publicity, promoting the concept of civilized funeral and burial, strengthening legislation, and simplifying the body donation process, which would lay the foundation for the development of medical education and research.
RESUMEN
An QuEChERS-UPLC-MS/MS method was developed for the simultaneous determination of eight hydroxylated polybrominated diphenyl ethers( OH-PBDEs) in soil samples. After being mixed with 10 mL of water, the sample was extracted with acidified acetonitrile, cleaned up by C18 and primary secondary amine ( PSA ) . The separation of eight OH-PBDEs was performed on a C18 column using gradient elution of acetonitrile and water as mobile phase within 9 min. The OH-PBDEs were analyzed under the multiple-reaction monitoring ( MRM ) mode with negative electrospay ionization. Under the optimal conditions, the calibration curves were linear well in the range of 2-200 μg/L with correlation coefficients ranging from 0. 9936 to 0. 9990, and the limits of detection of eight OH-PBDEs were in the range of 0. 23-1. 21 ng/g. At the spiked levels of 5. 0 and 50 ng/g, the average spiked recoveries for eight OH-PBDEs were between 73. 2% and 117. 7%, with the relative standard derivations ( RSDs) from 5. 6% to 19. 7%. The developed method is simple and sensitive, and suitable for the rapid analysis of large quantities of samples.