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The concentrations of boron, beryllium, antimony, selenium and vanadium in soils in Nagano prefecture [Japan]
1987
Seki, H. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Yanagimachi, Y. | Maruyama, M. | Nagase, K.
Determination of linear alkylbenzenesulfonates by high-performance liquid chromatography
1983
Tsukioka, T. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Murakami, T.
An attempt was made to apply high-performance liquid chromatography (HPLC) to a high-accuracy determination of linear alkylbenzenesulfonates (LAS) contained in environmental samples highly contaminated with organic matters; LAS was converted into chlorides (LAS-Cl) or methyl esters (LAS-O-Me) before being subjected to HPLC. The present HPLC method employed Shimadzu PC8-10, Waters micro Bondapak C18, or Jascopack SC-01-125 as a separating column, 85-90% methanol as an eluent, and wavelengths 250 and 225 nm for the measurement of LAS-Cl and LAS-O-Me, respectively. An experiment on material recovery for river water, sediment, and living body samples has given a satisfactory result that recovery is over 90%, coefficient of variation is 2-3%, and detection limit is 0.05 micro g. Test analyses have proved the present HPLC method to give rise to few interfering peaks so as to be satisfactorily applicable on actual environmental samples.
Show more [+] Less [-]Ginseng radix rubra manufacturing process of Panax ginseng [Panax pseudoginseng] C.A. Meyer
1981
Kubota, M. (Nagano-ken. Research Inst. for Health and Pollution (Japan))
The components of wild Phellodendron amurense Ruprecht [Rutaceae]
1981
Kubota, M. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Kurashina, I. | Matsuzawa, K.
Investigation on fluorine and heavy metals in the annual rings of trees
1981
Ogihara, K. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Seki, H. | Katsuno, T. | Nagase, K.
Eutrophication in lakes and the trophic state index
1981
Kawamura, M. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Higuchi, S.
Assessment reserch of river sediments using heavy metal concentrations
1979
Katsuno, T. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Akaoka, T.
Chemical consituents in precipitations
1979
Satsumabayashi, H. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Sasaki, K.
Field survey of photochemical oxidants damage on morning glory [Pharbitis nil] in Nagano city
1979
Komiyama, S. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Nakazawa, Y. | Hirosawa, I.
Temporal variation in quality of groundwater from a shallow well in an agricultural (apple orchard) area
2004
Fukuzawa, H.(Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Akaoka, T. | Ozawa, H.
