Internet is an international computer network system, which can quickly and conveniently realize information and data sharing, data transmission, information management and search around the world. 1, Internet resource guide. The chromatographic data available on the Internet is extremely rich. To search, you must first know what topics, service forms and their websites are on it. These contents can be obtained from online search engines, resource guides or WorldWideWebVirtualLibrary. For example, you can get the chemical resources guide from the following address: (1) USA/~ XXIA/Webchin/s-online/online-h.htm); (5) Comprehensive search engine Yahoo: yahoo.com Sohu: Sina: Virtual library is a server that summarizes and classifies all kinds of information of a certain subject on the Internet. With these virtual libraries, users only need to click on the content they are interested in, and the server will automatically connect to the outlets where the relevant materials are located and bring up the relevant materials. The websites of some excellent chemical virtual libraries are as follows: The resource guide of the chemical virtual library is often essential for chromatographic professionals to access the Internet to search for information related to their professional fields. 2. Online search online search is generally charged, and users must pay a certain fee to search on the computer. 2. 1CA(ki.com.net) is a CD magazine compiled by Tsinghua University CD Center, which contains the titles, abstracts and full texts of major domestic sci-tech journals. Most domestic journal articles since 1996 can be consulted online, and authors and keywords can be used for current literature retrieval and retrospective retrieval. Among them, the title inquiry is free. 3. Books Many publishing houses at home and abroad provide information such as their publications catalogue through the Internet. Titlenet (gopher://infx.infor.com) is the address where publishing houses display and describe their books, magazines and other publications. Users can learn about the content introduction, prices and other information of various new books from this website. At present, many domestic publishing houses have also established their own portals on the Internet. For example, the URL addresses of some publishing houses related to chemistry and chemical engineering are as follows: Higher Education Press: Chemical Industry Press: Science Press:/Encyclopedia of China Press: China Light Industry Press: 6.4 Periodical Papers At present, many periodicals publish electronic versions online. It can be divided into two types: completely free and paid. For free periodicals, there are three publishing methods: title, title+abstract and full text. Please refer to the above resource index guide for details. At present, there are more than 400 online journals related to chemistry and chemical engineering. For example, Journalofchromography Science (/) provides patent agencies in various countries and China patent abstracts database (. Net) provides information query. 6. Technical standard DocumentCenter (/doccenter) is a server used to query and publish relevant government and industry standards from the Internet, from which the standards of the US Department of Defense and the American Society for Experimental Materials (ASTM) can be found. Gopher (National Institute of Standards and Technology, Gopher://server.nist.gov) can also consult some American national standards. 7. Chemical Databases There are many chemical databases on the Internet, such as the chemical database of San Diego State University (Merck &; Co.Inc PerkinElmerCorporation also has some comprehensive analytical instrument websites in China, such as analytical instruments (/,/chromatographic skills:/chromatographic software//waters home page (/) analytical instrument company (/) HPLC guide (/peaktek/PeakTek.html).

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