Abstract: A collector 3 capable of collecting and sampling simultaneously various types of chlorinated organic compounds in both particulate and gaseous forms contained in a fluid and easy to extract the sampled chlorinated organic compounds therefrom includes a sampling filter 7 installed in a holder 6 having a discharge route 12a. The sampling filter 7 contains fibers and an inorganic binder for binding the fibers to one another and has a fluid-permeability. Various types of the chlorinated organic compounds such as dioxins and coplanar PCBs in both particulate and gaseous forms contained in a sample gas flowing into the holder 6 from a flue duct 25 through a sampling pipe 2 and an introduction pipe 8 are collected and sampled while the sample gas being passed through the sampling filter 7 and the resulting sample gas from which the chlorinated organic compounds are removed is then discharged out to the outside through the discharge route 12a.

Abstract: A collector 3 capable of collecting and sampling simultaneously various types of chlorinated organic compounds in both particulate and gaseous forms contained in a fluid and easy to extract the sampled chlorinated organic compounds therefrom includes a sampling filter 7 installed in a holder 6 having a discharge route 12a. The sampling filter 7 contains fibers and an inorganic binder for binding the fibers to one another and has a fluid-permeability. Various types of the chlorinated organic compounds such as dioxins and coplanar PCBs in both particulate and gaseous forms contained in a sample gas flowing into the holder 6 from a flue duct 25 through a sampling pipe 2 and an introduction pipe 8 are collected and sampled while the sample gas being passed through the sampling filter 7 and the resulting sample gas from which the chlorinated organic compounds are removed is then discharged out to the outside through the discharge route 12a.

Abstract: Disclosed is an adsorbent for dioxins which is capable of enough removing dioxins in exhaust gas even with large amounts of tar components, being usable at high temperatures and capable of enough removing dioxins even at high temperatures. The adsorbent for dioxins contains at least one kind selected from among activated alumina, iron-type zeolite, aluminum-type zeolite, potassium-type zeolite and silica.

Abstract: A collector 3 capable of collecting and sampling simultaneously various types of chlorinated organic compounds in both particulate and gaseous forms contained in a fluid and easy to extract the sampled chlorinated organic compounds therefrom includes a sampling filter 7 installed in a holder 6 having a discharge route 12a. The sampling filter 7 contains fibers and an inorganic binder for binding the fibers to one another and has a fluid-permeability. Various types of the chlorinated organic compounds such as dioxins and coplanar PCBs in both particulate and gaseous forms contained in a sample gas flowing into the holder 6 from a flue duct 25 through a sampling pipe 2 and an introduction pipe 8 are collected and sampled while the sample gas being passed through the sampling filter 7 and the resulting sample gas from which the chlorinated organic compounds are removed is then discharged out to the outside through the discharge route 12a.

Abstract: Disclosed is an adsorbent for dioxins which is capable of enough removing dioxins in exhaust gas even with large amounts of tar components, being usable at high temperatures and capable of enough removing dioxins even at high temperatures. The adsorbent for dioxins contains at least one kind selected from among activated alumina, iron-type zeolite, aluminum-type zeolite, potassium-type zeolite and silica.

Abstract: A two-dimensional nuclear magnetic resonance spectrometry which comprises the following steps to facilitate phase correction:(a) taking the Fourier transform of the set S(t.sub.1, t.sub.2) of the free induction decay signals with respect to t.sub.2 to generate the transformed data sets of S.sub.c (t.sub.1, F.sub.1) or S.sub.s (t.sub.1, F.sub.2), the signals being stored in the memory corresponding to the values of t.sub.1 ;(b) obtaining data S.sub.c (t.sub.1000, F.sub.2) and S.sub.s (t.sub.1000, F.sub.2) whose phases have been shifted by phase angle .theta..sub.2, from the initial data S.sub.c (t.sub.1000, F.sub.2) and S.sub.s (t.sub.1000, F.sub.2) contained in two Fourier components S.sub.c (t.sub.1, F.sub.2) and S.sub.s (t.sub.1, F.sub.2) derived by the Fourier transformation made in the step (a), in such a way that the peak contained in the initial data S.sub.c (t.sub.1000, F.sub.2) and S.sub.s (t.sub.1000, F.sub.

Abstract: There is disclosed a method of precisely correcting the phase of a two-dimensional NMR spectrum along the two axes. First, a first phase train is applied to a sample. After an evolution period of t.sub.1, a second pulse train is applied. Then, the free induction decay signal emanating from the sample is detected during a detection period of t.sub.2, using a quadrature detection system. This process is repeated with different values of t.sub.1. Thus, a complex NMR spectrum S.sub.1 (t.sub.1, t.sub.2) is obtained. Subsequently, the sample is excited with a pulse sequence which is similar to the first-mentioned pulse sequence except that the second pulse is shifted in phase by 90.degree./n (n is a natural number) with respect to the second pulse of the first-mentioned pulse sequence. The resulting free induction decay signal is detected. This process is repeated with the same number of different values of t.sub.1 as the values of t.sub.1 used in the first set of measurements. Thus, a complex NMR spectrum S.sub.

Abstract: The present invention provides a nuclear magnetic resonance spectroscopy that permits one to see changes in spectra without the use of long-range coupling even if the obtained resonance lines split into complex multiplet patterns.

Abstract: A two-dimensional nuclear magnetic resonance spectrometry which comprises the following steps to facilitate phase correction:(a) taking the Fourier transform of the set S(t.sub.1, t.sub.2) of the free induction decay signals with respect to t.sub.2, the signals being stored in the memory corresponding to the values of t.sub.1 ;(b) obtaining data S.sub.c (t.sub.1000, F.sub.2) or S.sub.s (t.sub.1000, F.sub.2) whose phases have been shifted by phase angle .theta., from the initial data S.sub.c (t.sub.1000, F.sub.2) and S.sub.s (t.sub.1000, F.sub.2) contained in two Fourier components S.sub.c (t.sub.1, F.sub.2) and S.sub.s (t.sub.1, F.sub.2)derived by the Fourier transformation made in the step (a), in such a way that the peak contained in the initial data S.sub.c (t.sub.1000, F.sub.2) or S.sub.s (t.sub.1000, F.sub.2) takes an absorption or dispersion waveform to make phase correction;(c) shifting the phases of the data of the Fourier component S.sub.c (t.sub.1, F.sub.2) or S.sub.s (t.sub.1, F.sub.

Abstract: A nuclear magnetic resonance spectrometry is disclosed in which a 90.degree. pulse and a 180.degree. pulse are applied to nuclei under observation at a time interval of t. Then, the resulting echo signal is observed after a period of t. Either a strong 90.degree. pulse of strong RF waves are applied to nuclei that are not observed. The strong RF waves decouple the nuclei not observed over a broad range. The application of the strong 90.degree. pulse or RF waves is initiated in synchronism with the 180.degree. pulse. The application of the RF waves are terminated before the beginning of the observation of the echo signal. The observation made in this way makes it possible to obtain spectra of quaternary carbons, the spectra including the information about long-range coupling.

Abstract: The present invention relates to an improved nuclear magnetic resonance spectroscopy for selectively detecting multiple quantum transitions of a selected order, the transitions taking place in a sample containing a system of rotating magnetic resonators. The spectrometry comprises the steps of: (a) applying a pulse train to the resonators, the pulse train consisting of RF pulses in which at least one pulse is .phi. degrees out of phase with the last pulse; (b) detecting the free induction decay signal emanating from the resonators for a period of time t2 after the application of the pulse train, using two channels of detecting system which are 90.degree. out of phase with each other, and storing it in a memory. The steps are repeated changing the values of the evolution time t1, resetting the values of .phi., and adding 90.degree., 180.degree., and 270.degree. to all values of .phi.. The data are combined and converted to frequency domain by double Fourier transformation with respect to t1 and t2.

Abstract: A method and apparatus for nuclear magnetic resonance spectroscopy is disclosed which expands the decoupling bandwidth. In the method, a pulse train containing a series of radiofrequency pulses joined without interval is applied repeatedly to a sample, each radiofrequency pulse being phased at 0.degree., 90.degree., 180.degree., or 270.degree., and the radiofrequency carrier of the pulse train is reversed in phase at the interval longer than the repetitive cycle of the pulse train asynchronously with the repetition of application of the pulse train.