全自动索氏抽提系统

不同水体的氢氧稳定同位素可用于植物水分利用来源、水汽输送、土壤水运移和补给机制、补给源和地下水机制、水体蒸发、植物蒸腾和土壤蒸发的区分、径流的形成和汇合、重建古气候等方面的研究。因而引起了水文学家，生态学家以及气候学家等的广泛关注。但问题是：在进行水稳定同位素测试之前如何将植物木质部和土壤中的水分无分馏的提取出来？LI-2100是LICA自主研发的一款全自动真空冷凝抽提系统，且已通过CE认证。从根本上解决了植物和土壤水分提取的难题，克服了传统液氮冷却的繁琐，不仅可以防止同位素分馏，而且安全高效，不会对植物和土壤造成破坏。可与LGR水同位素分析仪和质谱仪配套使用。许多科学家已经结合LI-2100和LGR的水同位素分析仪进行了诸多研究。从研发生产至今，LI-2100在国内已经销售了近百台，国内的科研工作者利用这台仪器发表了诸多文献，得到了用户的众多好评。随着LI-2100在国内的广泛应用及众多文献的发表，国外的一些科学家也开始关注理加公司研发生产的LI-2100，理加公司也积极在海外推广该产品，由此拉开了LI-2100走出国门、走向海外的序幕。LI-2100在海外的安装案例1. 巴西国家空间研究所（INPE）应用：利用LI-2100抽提土壤、植物中的水，进行同位素相关研究。科学家简介：Laura De Simone Borma (劳拉德西蒙娜博尔玛)1988 年毕业于欧鲁普雷图联邦大学土木工程专业，1991 年获得里约热内卢联邦大学土木工程硕士学位，以及里约热内卢联邦大学土木工程-环境岩土工程博士学位（1998）。自 2009 年起在 INPE（国家空间研究所）担任研究员，从事生态水文学和土壤物理学领域的工作，重点是实地观察陆地和极端天气事件对土壤-植物-大气相互作用以及气候变化、土地利用和覆盖变化的影响。她目前是 INPE 的 PGCST（地球系统科学研究生）和 PGSER（遥感研究生）的教授。协调 CCST/INPE 的生态水文学 (LabEcoh) 和生物地球化学 (LapBio) 实验室。她是 ISMC（国际土壤建模联盟）的成员。她对巴西不同生物群落中土壤-植物-大气相互作用、生态水文学以及水和气候调节的生态系统服务领域的研究感兴趣。LI-2100在海外的安装案例2. 澳大利亚Flinders大学 College of Science and Engineering应用：利用LI-2100抽提土壤、植物中的水，进行同位素相关研究。 LI-2100在国内的部分安装案例1、沈阳气象局2、中国林业科学研究院亚热带林业研究所3、广西植物园4、中国科学院西双版纳热带植物园...发表文献1. 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臭氧前体物的野外全自动在线监测 PerkinElmer 与美国国家环保局（US EPA）成功合作案例---无需液氮、无需人员照看、24小时连续监测、化合物测量范围更宽、更高灵敏度的全自动热脱附-气相色谱臭氧前体物（C2-C12 VOCs）分析解决方案 在美国，1970 年的清洁空气法赋予了环保署（EPA）保护空气清洁和保障公众健康的责任。1990年，在传统的六项环境空气监测指标基础上加入了挥发性有机物（VOCs）的监测。VOCs、羰基类化合物（carbonyls）以及氮氧化物（NOx）是地面臭氧生成的前体物，无论是在城市还是乡村地区，它们都以低至ppb 级别的浓度存在于环境空气中。在美国这些项目的测试是通过光化合物评估监测站（PAMS）来实施的。全球范围内也有一些其他类似机构进行这样的工作。例如，欧洲现在就在遵循联合国欧洲经济局有关控制VOCs 排放的协议。 在我国，即将发布的《环境空气质量标准》中将增设臭氧8小时平均浓度限值，并将该指标纳入空气质量的日常评价。作为臭氧前体物及大气的主要污染物之一---挥发性有机物（VOCs）无疑将在&ldquo 十二五&rdquo 期间倍加重视。2011年12月发布的《国家环境保护&ldquo 十二五&rdquo 规划》中已明确提出要求开展挥发性有机污染物等有毒废气监测，并将对 VOCs 相关重点行业如石化、有机化工、合成材料、化学原料药、塑料、设备涂装、电子元器件、电子电器产品、包装印刷等行业进行重点监管。 PerkinElmer 作为全球著名分析仪器供应商，从1955年率先推出全球第一套商用气相色谱仪以来，已屡创多项业内关键第一，如第一套全自动热脱附分析仪、第一套自动进样器、第一根毛细管色谱柱、第一套FID/NPD检测器、第一套GC/MS等。对于臭氧前体物分析，现可提供从样品前处理到分析结果的整体解决方案 方案特点 完全满足美国环保局（U.S.EPA）《臭氧前体物采样和分析技术支持文件》EPA/600-R-98/161 允许无人操作双柱同时分析 中心切割技术产生平行色谱图增大产出和色谱分离效果 1小时间隔采样 采样与色谱分析同时进行 系统自动校准 完整的数据处理 可选择热脱附系统、气相色谱和数据处理的远程软件控制 无需冷却剂操作 一家供应商提供全部分析方案包 配备中心切割设备及双FID检测器的 Clarus 气相色谱仪 和配备联机进样附件 TurboMatrix 热脱附仪 TotalChrom 和 Turbomatrix 远程控制软件 Swafer 中心切割设备 注：双柱分离5ppb 臭氧前体物（C2-C12 VOCs）标准物质典型色谱分析图 PerkinElmer 典型客户郊外臭氧前体物在线监测监测站照片 请点击查阅相关应用文章

本产品的技术原理为：对经微波消解、真空抽滤处理后得到的滤膜进行洗脱，洗脱液作为样品被注入分析系统，当样品流经微型流通池（样品检测区）时，高速显微相机对其自动聚焦并以高至120帧/秒的速度拍照，智能化的数据分析软件实时截取所拍照片中的微粒显微图像，并进行硅藻自动识别与分类，当样品分析完成后，自动输出硅藻定性定量分析报告。基于该原理的硅藻检验方法已申请国家发明专利。 一、与采用常规光学显微镜或扫描电镜检测硅藻的方法相比，突出的优点为：1、全自动化。无需人工识别硅藻，大大降低工作强度，减少人为误差；简单易学，检验人员经半日培训后即可独立操作。2、高效。单个样品分析只需数分钟至20分钟，而采用光镜或扫描电镜检测，通常需2-3小时。3、数据处理功能强大。可得到硅藻40多种形态学信息和各形态、尺寸硅藻分布情况，是研究水中尸体脏器组织中硅藻的分布规律以及进行其他相关研究的有力工具。4、系统图库可拓展。可将新采集的硅藻图像加入所属种类的图库，增加图库容量，提高硅藻自动识别和分类的准确度，用户可根据需要自建新的图库。 配有自动进样器的全自动法医硅藻检测系统 二、产品技术参数1、采用专利光学系统捕获流动样品中的硅藻，自动分析硅藻种类与含量，实现硅藻定性定量分析的自动化。2、提供所拍摄硅藻的有效直径、长度、宽度、纵横比等40多种形态学信息及各形态、尺寸硅藻的分布情况。3、采用高分辨CMOS相机，1920×1200像素。4、图像类型/格式： 彩色，JPG。5、拍摄速度：高达120 帧/秒。6、放大倍数/流通池/相机拍摄范围为：A、20X物镜 (总放大倍数≈200X)；流通池 (厚度)：50μm；相机拍摄范围：675 μm （高）×422 μm （宽）；B、10X物镜 (总放大倍数≈100X)；流通池 (厚度)：100μm；相机拍摄范围：1,351 μm （高）×844 μm （宽）。7、可选配自动进样器，实现多样品分析自动完成。自动进样器：96 孔板，2 个板位，具有自动振荡、加热及冷却功能，单孔样品量5μl-1000μl，配有自动进样管理软件8、自动清洗管路，避免污染。9、含常见硅藻图库，图库可扩展，并可根据需要自建图库；软件具有智能学习能力，随着图库容量的增大，硅藻自动识别和分类的准确度不断提高。10、台式，携带方便。主机尺寸：38cm（高）×36cm（宽）×44cm（深）。 三、实际案例展示一溺死者脏器组织中检出的硅藻2g肺组织中检出的部分硅藻10g肝组织中检出的全部硅藻 10g肾组织中检出的全部硅藻创新点：本产品是全球第一款全自动法医硅藻检测系统，基于FlowCAM流式影像仪针对法医硅藻检测进行深度开发。目前该系统可全自动识别硅藻，得到硅藻的40多种形态学信息和各形态、尺寸硅藻分布情况，从而提高检验效率。同时用户可以自行拓展图库，提高硅藻自动识别和分类的准确度。 全自动法医硅藻检测系统