In the process of coking production, the acidity detection of crystallization tank in ammonium sulfide section is analyzed by manual sampling, which is time-consuming and laborious, and the detection is not timely, which can not control the production process in real time. In the paper, by studying the automatic measurement and control method of acidity of ammonium sulfide crystallizing tank, the automatic sampling, analysis and detection of acidity value can realize the stable control of acidity of ammonium sulfide tank, reduce the consumption of sulfuric acid and increase the yield of ammonium sulfide, save manpower, low cost, improve the reliability of the whole process. The product of the reaction between the solution and the titrant and the cleaning water can be discharged into the sample tank without affecting the sample in the sample tank. There is no need to treat the waste liquid separately.

对于设备管理人员及工程技术人员开展设备故障机理、故障特征和故障诊断这一系列工作的培训,湘钢自主设计开发了一套旋转机械设备故障诊断与寿命试验系统,部署于首席技师工作室,系统可模拟轴系、轴承、齿轮、润滑油污染故障以及模拟变速/变载对设备健康状态的影响.该系统创新性等应用多种类型传感器采集温度、振动、应力波能量、转速、扭矩等参数监测设备的运行状态,工程技术人员在该试验系统上动手制造故障并分析解决故障,达到加深对于旋转机械故障诊断理论的认识理解、提高实践创新水平的目的.

医用压缩式雾化器作为常用的医疗雾化设备,由于疗效明显、毒副作用小等优势,临床使用越来越广泛.雾化速率和残留液量作为检测医用压缩式雾化器重要参数,是衡量仪器可靠性的重要指标,对药物雾化的治疗效果起到关键作用.通过对雾化速率采用量体积法和称质量法分别实验,从方法比较、操作流程、数据分析以及影响因素展开研究,对雾化液不同雾化状态的残留液量分析实验,创新性提出反映仪器真实参数值的检测方法.采用称质量法检测雾化速率,减少了影响测量结果的因素带来的测量误差.选取合理的雾化状态和测量时间点是检测残留液量的有效保障,确保测量数据准确可靠的同时提高检测效率,减少外部干扰带来的测量误差,可以真实反映仪器的计量特性.

雾化器雾滴粒径分布作为评价雾化器性能和治疗效果的重要指标,其检测方法对测量结果起到关键作用.通过采用Mie散射改进算法的激光粒度分析仪,研究压缩式雾化器流量、雾化杯、检测载体、检测环境对雾滴粒径分布的影响,试验表明:在检测环境和条件相同情况下,压缩式雾化器输出流量与雾滴粒径分布及占比呈正相关,与相同雾滴体积分布及占比前提下的粒径大小反相关;使用配套雾化杯更能保证有效颗粒集中分布;根据不同载体,只有合理设定粒径分布及占比参数,才能使雾化器的性能检测具有可比性;为避免外界光照环境干扰,应尽量在无外部光线的条件下进行检测,得到的数据才可靠.

液压拉伸器作为一种高精度螺栓拧紧、拆卸工具,已经广泛应用在汽车、船舶、航空航天,能源、重型机械等各种领域中,文章是对液压螺栓拉伸器的计量校准方法进行研究并通过各项实验进行验证.

针对校准实验室计量器具的特性进行分析,且提出设备管理的相关建议.校准实验室计量器具的管理,需要坚持专业性、科学性及细致性原则,从采购、使用及维护等方面进行管理,保证实验室计量器具的质量,提升计量的准确度.

文章针对医用压缩式雾化器雾化速率这一重要参数的不确定度评定进行了探讨,并得出了相应的相对扩展不确定度.为制定国家和行业标准以及国家技术规范提供参考,也可供从事医用压缩式雾化器检测和研究的相关人员参考.

The reason and effect of absorption peak shifting and its elimination and application in absorption spectrophotometry were discussed in terms of variations of absorption interference,monochromatic light property and analyte absorption characteristic.The regularity of analyte absorption peak shifting induced by constructive and destructive interferences were mainly discussed.The regularity provided a theorectical basis for the investigation of the variations of the determined peak location,peak height and shape caused by the impurities in the reagent and solvent,concomitants in samples,and interferents in the products.Novel quantitative spectrophotometric methods could be developed based on the information provided by the positive and negative absorption curves of analyte standard solution and the absorption peak sifting regularity.This regularity can also be used in other peak analysis.

<正>成人平均每天应摄入(0.5～5)mg氟,过少、过多都可能引起疾病。氟广泛存在于地表和大气中,已成为环境、医疗卫生、水文、土壤及化工等许多部门的常检项目。检

提出相长干扰和相消干扰引起吸收峰波长表观红移或紫移的理论，并全面探讨吸收峰波长移原因、影响及不良后果的消除方法。从而能更好地研究和利用物质的吸收特性，提高某些分析的灵敏和度,解决某些不能测定的问题，避免现时的某些错误，对光度分析及物质吸收特性等的研究具有理论实用价值.

建立了二甲苯蓝FF褪色-负吸光度法及生色法测定微量亚硝酸根的方法,其Sandell灵敏度分别为9.08×10-4及2.54×10-3μg/cm2,线性范围为0.01～1.2 mg/L及0.03～1.2 mg/L.检测了湖水及池塘水中的亚硝酸根.