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1.
目的:测定环境水样中痕量铬。方法:采用平台石墨炉原于吸收法和基体改进剂对河水、湖水等样品中的痕量铬进行了测定。结果:在研究了最佳测试条件的基础上,对环境水样在最佳实验条件下的分析结果满意,回收率在97.4--103.2%之间,RSD最大为3.6%。结论:说明本法可用于一般轻度污染水样中痕量铬的测定。  相似文献   

2.
目的:建立了绞股蓝中痕量汞的测定方法.方法:利用还原气化的非色散型装置,采用HNO3-H2O2湿法消解体系,对绞股蓝中的痕量汞进行了冷原子荧光测定.结果:试验回收率在85.4%~110.2%之间,方法检出限为0.03 μg/L.结论:该方法用于实际样品测定,结果满意.  相似文献   

3.
目的:建立人发汞水平的高压消解.原子荧光光谱测定方法。方法:头发样品经清洗,用HN03和H202作为消解剂在聚四氟乙烯消解罐中消解,在选定的工作条件下利用原子荧光光谱法测定消解液中汞浓度。结果:本法检出限0.008μg/L。方法定量线0.4~2.0μg/L,标准曲线相关系数0.9998。重复测量相对标准偏差0.95%;样品加标回收率97.5%~102.8%。结论:本法方便、快速、准确、灵敏度高,适于头发样品中的汞检测。  相似文献   

4.
离心光度法测定发样汞   总被引:1,自引:0,他引:1  
目的:建立一个简便超高灵敏的发样汞测定方法。方法:以溴化物和罗丹明B为显色剂与汞形成离子缔合物离心光度法测定痕量汞。结果:该法线性范围0.001~0.10μgHg(Ⅱ)/10ml,摩尔吸光系数ε560=7.46×107L·cm-1·mol-1,CV:2.1~2.6%,回收率94~102%。结论:该法灵敏度好,选择性高,适于发样中痕量汞的分析。  相似文献   

5.
李春建 《南通医学院学报》1999,19(4):439-439,424
为开发现有仪器的功能及提高其利用效益,自行设计和加工汞蒸气发生装置与吸收等,并和原子吸收分光光度计联用,应用于头发中痕量汞的测定,结果组发样的回收率分别灰101.8%和99.0%。表明该自制装置灵敏度高,精密准确,操作简便易行;花费不多而能满足卫生分析中痕量汞的测定要求。  相似文献   

6.
怀牛膝蜕皮甾酮的含量测定   总被引:5,自引:0,他引:5  
目的:测定怀牛膝中蜕皮甾酮的含量测定。方法:采用高效液相色谱法测定怀牛膝中蜕皮甾酮的含量。结果:蜕皮甾酮在0.2~1.8μg范围内线性关系良好。结论:本方法操作快速、简便、准确,可作为蜕皮甾酮的定量分析方法。  相似文献   

7.
青岛市区市售食物重金属污染现况调查   总被引:7,自引:0,他引:7  
(1)目的:了解青岛市售食物中重金属铅,汞,镉的含量及居民的摄入量。(2)方法:样品均为市区市售常见食品,样品处理及测试采用国家标准方法(GB5009.15-85,GB5009,17-85,GB5009.12-85).(3)结果:海产品中汞,铅的含量超标率为15.6%,8.9%蔬菜中铅含量超标率为12.5%;居民每人每日铅,汞,镉的摄入量分别为16.30,125.37,25.37μg。(4)结论:青岛市区市售食品中部分样品铅,汞,镉的含量超过卫生标准,居民上述金属摄入理低于WHO推荐的允许摄入量,居民摄入安全。  相似文献   

8.
目的建立测定人发和血清样品中痕量钼的新方法。方法采用CaCl2为钼基体改进荆,1%HNO3为介质,灰化温度1800℃、20s,原子化温度2800℃、5s,石墨炉原子吸收光谱法测定人发和血清样品中痕量钼。鳍果人发和血清中痕量钼浓度范围为0—40μg/L时,方法线性良好,相关系数r=0.9994,回收率为84.0%-96.0%,RSD为1.6%-3.9%。鳍论方法简便,精密度好,结果准确,适用于人发和血清及一般体生物组织样品中痕量钼的测定。  相似文献   

9.
目的:建立用微波消解-冷原子吸收法测定螺旋藻粉中的痕量汞的方法.方法:螺旋藻粉样品经过微波消解后,其中的汞被氧化为离子状态的汞,利用冷原子吸收测汞仪对样品进行测定.结果:汞浓度在0~5.00 μg/L的范围内具有较好的线性,相关系数达到0.9999,方法检出限为0.013 μg/L,且对国家一级标准物质贻贝(GBW08571)的验证结果与标准值吻合,回收率为90%-108%,样品测定相对标准偏差为4.7%.结论:微波消解-冷原子吸收法灵敏度高,操作简单快捷,结果可靠,适合于测定螺旋藻粉中的痕量汞.  相似文献   

10.
目的 :建立板蓝根中痕量汞的测定方法。方法 :利用还原气化的非色散型装置 ,湿法消解对中药板蓝根中的痕量汞进行原子荧光测定。结果与结论 :试验回收率为 86 9%~ 110 8% ,误差 <± 13 1% ,可用于板蓝根中痕量汞的测定。  相似文献   

11.
Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P < 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (>0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P <0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P < 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.  相似文献   

12.
Objective: To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods: SD rats served as both donors and recipients. 4℃ sodium lactate Ringer's was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava (IVC) inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results: Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion: This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.  相似文献   

13.
FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…  相似文献   

14.
Shock wave lithotripsy (SWL) is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it's difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.  相似文献   

15.
Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.  相似文献   

16.
INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5  相似文献   

17.
People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.  相似文献   

18.
Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.  相似文献   

19.
In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.  相似文献   

20.
Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.  相似文献   

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