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公开(公告)号：US20090285257A1
公开(公告)日：2009-11-19
申请号：US12508648
申请日：2009-07-24
IPC分类号： G01N25/00
摘要： An instrument and associated method are disclosed for the loss-on-drying determination of the volatile content of a wide variety of samples. The instrument includes a cavity in which a sample for which the volatile content is to be determined can be placed, a first source for introducing microwaves into the cavity that have frequencies substantially other than infrared frequencies, a second source for introducing radiant heat into the cavity at frequencies different from the frequencies introduced by the first source, an analytical balance for measuring the weight of a sample while the sample is in the cavity and on the balance, a temperature sensor capable of measuring and positioned to measure the temperature of a sample in the cavity and on the balance, and a processor in communication with the temperature sensor and each of the first and second sources for controlling the introduction of the frequencies of microwave and radiant energy into the cavity in response to the temperatures measured by the temperature sensor to control the sample temperature until the microwaves from the first source and the radiant heat from the second source dry the sample sufficiently for the processor to determine the volatile content of the sample based on the weight change of the sample on the balance.
摘要翻译： 公开了用于各种样品的挥发物含量的干燥损失测定的仪器和相关方法。 该仪器包括其中可以放置要确定挥发物含量的样品的空腔，用于将微波引入具有基本上不同于红外频率的频率的空腔的第一源，用于将辐射热引入腔中的第二源 在与第一源引入的频率不同的频率处，用于测量样品在腔中和平衡时的重量的分析天平，能够测量和定位以测量样品的温度的温度传感器 空腔和平衡部，以及与温度传感器和第一和第二源中的每一个通信的处理器，用于响应于由温度传感器测量的温度而将微波和辐射能的频率引入空腔中 控制样品温度，直到来自第一个来源的微波和来自th的辐射热 第二来源充分干燥样品以使处理器基于样品在天平上的重量变化来确定样品的挥发性含量。
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公开(公告)号：US07997790B2
公开(公告)日：2011-08-16
申请号：US12508648
申请日：2009-07-24
摘要： An instrument and associated method are disclosed for the loss-on-drying determination of the volatile content of a wide variety of samples. The instrument includes a cavity in which a sample for which the volatile content is to be determined can be placed, a first source for introducing microwaves into the cavity that have frequencies substantially other than infrared frequencies, a second source for introducing radiant heat into the cavity at frequencies different from the frequencies introduced by the first source, an analytical balance for measuring the weight of a sample while the sample is in the cavity and on the balance, a temperature sensor capable of measuring and positioned to measure the temperature of a sample in the cavity and on the balance, and a processor in communication with the temperature sensor and each of the first and second sources for controlling the introduction of the frequencies of microwave and radiant energy into the cavity in response to the temperatures measured by the temperature sensor to control the sample temperature until the microwaves from the first source and the radiant heat from the second source dry the sample sufficiently for the processor to determine the volatile content of the sample based on the weight change of the sample on the balance.
摘要翻译： 公开了用于各种样品的挥发物含量的干燥损失测定的仪器和相关方法。 该仪器包括其中可以放置要确定挥发物含量的样品的空腔，用于将微波引入具有基本上不同于红外频率的频率的空腔的第一源，用于将辐射热引入腔中的第二源 在与第一源引入的频率不同的频率处，用于测量样品在腔中和平衡时的重量的分析天平，能够测量和定位以测量样品的温度的温度传感器 空腔和平衡部，以及与温度传感器和第一和第二源中的每一个通信的处理器，用于响应于由温度传感器测量的温度而将微波和辐射能的频率引入空腔中 控制样品温度，直到来自第一个来源的微波和来自th的辐射热 第二来源充分干燥样品以使处理器基于样品在天平上的重量变化来确定样品的挥发性含量。
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公开(公告)号：US07581876B2
公开(公告)日：2009-09-01
申请号：US11457798
申请日：2006-07-15
摘要： An instrument and associated method are disclosed for the loss-on-drying determination of the volatile content of a wide variety of samples. The instrument includes a cavity in which a sample for which the volatile content is to be determined can be placed, a first source for introducing microwaves into the cavity that have frequencies substantially other than infrared frequencies, a second source for introducing radiant heat into the cavity at frequencies different from the frequencies introduced by the first source, an analytical balance for measuring the weight of a sample while the sample is in the cavity and on the balance, a temperature sensor capable of measuring and positioned to measure the temperature of a sample in the cavity and on the balance, and a processor in communication with the temperature sensor and each of the first and second sources for controlling the introduction of the frequencies of microwave and radiant energy into the cavity in response to the temperatures measured by the temperature sensor to control the sample temperature until the microwaves from the first source and the radiant heat from the second source dry the sample sufficiently for the processor to determine the volatile content of the sample based on the weight change of the sample on the balance.
摘要翻译： 公开了用于各种样品的挥发物含量的干燥损失测定的仪器和相关方法。 该仪器包括其中可以放置要确定挥发物含量的样品的空腔，用于将微波引入具有基本上不同于红外频率的频率的空腔的第一源，用于将辐射热引入腔中的第二源 在与第一源引入的频率不同的频率处，用于测量样品在腔中和平衡时的重量的分析天平，能够测量和定位以测量样品的温度的温度传感器 空腔和平衡部，以及与温度传感器和第一和第二源中的每一个通信的处理器，用于响应于由温度传感器测量的温度而将微波和辐射能的频率引入空腔中 控制样品温度，直到来自第一个来源的微波和来自th的辐射热 第二来源充分干燥样品以使处理器基于样品在天平上的重量变化来确定样品的挥发性含量。
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公开(公告)号：US20080013592A1
公开(公告)日：2008-01-17
申请号：US11457798
申请日：2006-07-15
IPC分类号： G01N25/00
摘要： An instrument and associated method are disclosed for the loss-on-drying determination of the volatile content of a wide variety of samples. The instrument includes a cavity in which a sample for which the volatile content is to be determined can be placed, a first source for introducing microwaves into the cavity that have frequencies substantially other than infrared frequencies, a second source for introducing radiant heat into the cavity at frequencies different from the frequencies introduced by the first source, an analytical balance for measuring the weight of a sample while the sample is in the cavity and on the balance, a temperature sensor capable of measuring and positioned to measure the temperature of a sample in the cavity and on the balance, and a processor in communication with the temperature sensor and each of the first and second sources for controlling the introduction of the frequencies of microwave and radiant energy into the cavity in response to the temperatures measured by the temperature sensor to control the sample temperature until the microwaves from the first source and the radiant heat from the second source dry the sample sufficiently for the processor to determine the volatile content of the sample based on the weight change of the sample on the balance.
摘要翻译： 公开了用于各种样品的挥发物含量的干燥损失测定的仪器和相关方法。 该仪器包括其中可以放置要确定挥发物含量的样品的空腔，用于将微波引入具有基本上不同于红外频率的频率的空腔的第一源，用于将辐射热引入腔中的第二源 在与第一源引入的频率不同的频率处，用于测量样品在腔中和平衡时的重量的分析天平，能够测量和定位以测量样品的温度的温度传感器 空腔和平衡部，以及与温度传感器和第一和第二源中的每一个通信的处理器，用于响应于由温度传感器测量的温度而将微波和辐射能的频率引入腔中 控制样品温度，直到来自第一个来源的微波和来自th的辐射热 第二来源充分干燥样品以使处理器基于样品在天平上的重量变化来确定样品的挥发性含量。
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5.发明申请公开(公告)号：US20110084035A1
公开(公告)日：2011-04-14
申请号：US12970017
申请日：2010-12-16
申请人： Robert N. Revesz
发明人： Robert N. Revesz
IPC分类号： B01D35/00
CPC分类号： G01N1/40 , B01L3/50255 , B01L2300/0803 , B01L2300/1866 , B01L2400/0478 , G01N1/4044 , G01N1/44 , G01N22/00 , Y10T436/25
摘要： A filtration method and associated apparatus are disclosed for improving the separation yield of matrix based compositions. The method includes the steps of positioning a matrix based composition that includes at least some liquid in a filter vessel and applying a moderate over-pressure to the composition upstream of the filter to accelerate the movement of liquid through the filter. The associated apparatus includes a funnel support, a funnel resting in the funnel support, a filter cup resting in the funnel opposite the funnel support, an over-pressure cap for engaging the filter cup opposite the funnel, and a source of pressurized gas in communication with the over-pressure cap for supplying a moderate over pressure to the filter cup for accelerating the movement of solvent through the filter cup and the funnel.
摘要翻译： 公开了一种用于改进基于基质的组合物的分离收率的过滤方法和相关设备。 该方法包括以下步骤：将基于基质的组合物定位在过滤器容器中，至少包括一些液体，并在过滤器上游施加适度的超压，以加速液体通过过滤器的运动。 相关联的装置包括漏斗支撑件，漏斗支撑件中的漏斗，与漏斗支架相对的漏斗中的过滤杯，与漏斗对接的过滤杯的过压帽以及与漏斗相对的加压气体源 其中过压帽用于向过滤杯提供适度的过压，以加速溶剂通过过滤杯和漏斗的运动。
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公开(公告)号：US06462321B2
公开(公告)日：2002-10-08
申请号：US09950266
申请日：2001-09-10
IPC分类号： H05B680
CPC分类号： G01N22/00
摘要： A method and associated apparatus are disclosed for microwave assisted content analysis. The method includes the steps of applying microwave radiation to a sample while concurrently rotating the sample while the microwave radiation is being applied and while concurrently weighing the sample and while measuring the temperature of the sample and controlling or moderating the microwaves applied to the sample based upon the measured temperature.
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公开(公告)号：US06566637B1
公开(公告)日：2003-05-20
申请号：US09605816
申请日：2000-06-28
IPC分类号： H05B664
CPC分类号： G01N22/00
摘要： A method and associated apparatus are disclosed for microwave assisted content analysis. The method includes the steps of applying microwave radiation to a sample while concurrently rotating the sample while the microwave radiation is being applied and while concurrently weighing the sample and while measuring the temperature of the sample and controlling or moderating the microwaves applied to the sample based upon the measured temperature.
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8.发明授权
公开(公告)号：US5378878A
公开(公告)日：1995-01-03
申请号：US663441
申请日：1991-03-01
申请人： Robert N. Revesz
发明人： Robert N. Revesz
IPC分类号： B01J19/12 , B01L7/00 , C03B5/08 , C03B37/15 , F27D1/00 , F27D5/00 , F27D99/00 , G01N1/44 , G01N31/12 , H05B6/64 , H05B6/68 , H05B6/80
CPC分类号： H05B6/6455 , B01J19/126 , B01L7/00 , C03B37/15 , C03B5/08 , F27D5/0068 , G01N1/44 , G01N31/12 , H05B6/64 , B01J2219/1218 , F27D1/0009 , F27D2099/0028 , F27M2003/11
摘要： A highly preferred container for ashable material, which material is to be ashed by heat in an ashing furnace, while it is in such container, especially when such container is to be heated by microwave radiation onto microwave absorptive elements of the furnace, which thereby heat the container, is a heat resistant, walled container which is light weight, microwave transmissive, porous and air transmissive, which is of quartz microfibers that are held in desired walled container form, preferably in substantially flat cylindrical form. Such a container may be made by shaping a heat resistant, light weight, microwave transmissive and porous non-woven sheet of quartz microfibers to container form and heating and curing such sheet in such form, preferably after moistening it with water, whereby a form-retaining container results that can be successfully employed to hold ashable samples to be ashed for analysis during microwave powered ashings of such samples. The described containers may also be made by formation directly from the quartz microfibers, followed by sintering thereof to a form retaining article. Although pure quartz microfibers are preferred for the described containers they may contain or may be made of borosiliate glass, in which case their microwave transmission and high temperature stability can be decreased.
摘要翻译： 一种高度优选的可吸收材料的容器，该材料在灰化炉中通过加热在该容器中被散热，特别是当这种容器通过微波辐射加热到炉的微波吸收元件上时，由此加热 该容器是一种耐热的壁式容器，其重量轻，微波透射，多孔和透气，其为保持在期望的围壁容器形式，优选基本平坦的圆柱形形式的石英微纤维。 这种容器可以通过将耐热，重量轻的微波透射和多孔的石英微纤维无纺布片形成容器形式并且以这种形式加热和固化这样的片材，优选在用水润湿之后， 保留容器结果，可以成功地使用这些样品来容纳可灰化的样品，以便在这种样品的微波加工过程中进行灰分分析。 所描述的容器也可以通过直接从石英微纤维形成，然后将其烧结成形式保持制品制成。 虽然纯石英微纤维对于所述容器是优选的，但它们可以包含或可以由硼硅玻璃制成，在这种情况下，它们的微波传输和高温稳定性可以降低。
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公开(公告)号：US3936587A
公开(公告)日：1976-02-03
申请号：US484453
申请日：1974-06-28
摘要： A resistance heating furnace employs a pair of spaced electrodes, one of which is movable to clamp a resistive crucible between the electrodes for passing current therethrough for heating a specimen positioned in the crucible to fuse the specimen. A passageway is provided through one of the electrodes to permit an inert carrier gas to remove gases from the crucible for subsequent analysis. The electrode construction includes a relatively highly conductive base material electrically coupled to a power source for actuating the electrodes and inserts coupled to the surfaces of the electrodes which engage the resistive crucible. The insert material has a relatively high melting point and hardness and a relatively high thermal and electrical conductivity to increase the heating of the crucible and improve the durability of the electrodes. At least one of the electrodes is movable and actuated by a fluid cylinder for clamping the crucible between the electrodes at a constant pressure regardless of the crucible length.
摘要翻译： 电阻加热炉采用一对间隔开的电极，其中一个可移动以在电极之间夹紧电阻坩埚，以使电流通过，用于加热位于坩埚中的样品以熔化样品。 通过一个电极提供通道，以允许惰性载气从坩埚中除去气体用于随后的分析。 电极结构包括电耦合到电源的相对高度导电的基底材料，用于致动电极和耦合到接合电阻坩埚的电极表面的插入件。 插入材料具有相对较高的熔点和硬度以及较高的导热和导电性，以增加坩埚的加热并提高电极的耐久性。 电极中的至少一个可移动并由流体缸致动，用于在不管坩埚长度的情况下以恒定压力将坩埚夹在电极之间。
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公开(公告)号：US5443795A
公开(公告)日：1995-08-22
申请号：US74324
申请日：1993-06-09
申请人： Robert N. Revesz
发明人： Robert N. Revesz
CPC分类号： H05B6/806 , B01D11/0419 , B01J19/002 , B01J19/126 , H05B6/642 , H05B6/6447 , B01J2219/00263 , B01J2219/1209 , B01J2219/1218 , B01J2219/1233 , G01N1/44 , G01N2001/4061
摘要： An explosion proof microwave heated solvent extraction apparatus or system for extracting organic materials includes a pressure resistant microwave transmissive extraction container, which is preferably of reinforced polyetherimide lined with fluoropolymer, in a microwave radiation heated chamber, with a device for controlling a microwave radiation generator, such as a magnetron, in response to the presence of any solvent vapor in a collection container for rupture diaphragm discharged material from an extraction container or in exhaust gas from the chamber. The presence of the solvent in the collection container or exhaust gas is preferably detected by a semiconductor gas sensor which decreases its electrical resistance in the presence of solvent vapors, thereby increasing its voltage and thus controlling operation of the magnetron, turning it off when solvent vapor (and a potentially explosive gas mixture) is present. Also described are other explosion prevention systems, including a fluoropolymer sheet covering a chamber ceiling and ceiling light, and a process for safely extracting organic materials, utilizing the described apparatus.
摘要翻译： 用于提取有机材料的防爆微波加热溶剂萃取装置或系统包括在微波辐射加热室中具有用于控制微波辐射发生器的装置的耐压微波透射提取容器，其优选地是用氟聚合物衬里的增强聚醚酰亚胺， 响应于在收集容器中存在任何溶剂蒸气，用于从提取容器或来自室的废气中破裂隔膜排出的材料。 溶剂在收集容器或废气中的存在优选通过半导体气体传感器检测，半导体气体传感器在溶剂蒸气存在下降低其电阻，从而增加其电压并由此控制磁控管的操作，当溶剂蒸气 （和潜在的爆炸性气体混合物）存在。 还描述了其它防爆系统，包括覆盖室顶和天花板灯的氟聚合物片，以及利用所述装置安全地提取有机材料的方法。
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