초록 ▼

Gas chromatographs are disclosed that may be constructed to be portable, light, rugged, fast, sensitive, and to use only utilities (compressed gas and electricity) that are readily available in the field. The gas chromatographs can also perform novel extractions of analytes from gaseous, liquid, or

Gas chromatographs are disclosed that may be constructed to be portable, light, rugged, fast, sensitive, and to use only utilities (compressed gas and electricity) that are readily available in the field. The gas chromatographs can also perform novel extractions of analytes from gaseous, liquid, or solid samples. The chromatographs can be truly portable; they can operate with approximately 100 watts of power (at peak power consumption); and they are extremely fast. The chromatographs are not limited just to portable applications, but will also find many uses within laboratories, because they require minimal laboratory bench or other space, because they can operate at high speed, and because they can operate with minimal consumption of utilities (compressed gases, air conditioning, etc.).

대표청구항 ▼

A gas chromatograph comprising: (a) an elongated or coiled heater; (b) an elongated or coiled analytical column, wherein at least about 80% of the length of said column is positioned substantially parallel to said heater, and wherein at least about 80% of the length of said column is within 5 millim

A gas chromatograph comprising: (a) an elongated or coiled heater; (b) an elongated or coiled analytical column, wherein at least about 80% of the length of said column is positioned substantially parallel to said heater, and wherein at least about 80% of the length of said column is within 5 millimeters of the nearest point of said heater; (c) a temperature sensor for measuring the temperature of said column or the temperature near said column; and (d) a microprocessor responsive to said temperature sensor to control said heater; wherein said chromatograph is adapted for controlled temperature programming of said column; and wherein said heater is adapted for controlled temperature programming of said column at a rate of power consumption less than about 110 Watts.