UiO-66 Selective Enrichment Integrated with Thermal Desorption GC-MS for Detection of Benzene Homologues in Ambient Air.

In this study, UiO-66 was selected as sorbent media packed in the tube to selectively enrich trace levels of benzene homologues such as benzene, toluene, and xylene (BTX) in ambient air prior to thermal desorption (TD)-GC-MS determination. A series of experiments were conducted to obtain the optimal TD conditions. The results indicated that the optimal TD parameters were as follows: desorption temperature of 180°C, desorption flow rate of 50 mL min, and desorption time of 30 min.

[Neuroendocrine neoplasm of digestive system with different grades: a clinicopathologic and prognostic study].

Objective: To study the clinicopathologic and prognostic features of neuroendocrine neoplasm of digestive system with different grades.

Methods: The clinicopathologic features of 139 cases of neuroendocrine neoplasm occurring in digestive system were retrospectively reviewed and graded according to the 2010 World Health Organization classification of tumours of the digestive system. Immunohistochemical study for synaptophysin, chromogranin A and Ki-67 was carried out.

[Association of HER2 protein expression with clinicopathologic features and prognosis in Chinese patients with gastric carcinoma].

Objective: To evaluate the epidemiological status of HER2 protein expression in Chinese patients with gastric carcinoma, and to study its clinical and prognostic significance and the association with the clinicopathological features.

Methods: The clinical data were reviewed in 860 patients with gastric carcinoma admitted to Guangdong General Hospital from 2003 to 2010. The HER2 status was evaluated using immunohistochemistry (IHC).