SU1265557A1

SU1265557A1 - Device for atomization of sample in flame

Info

Publication number: SU1265557A1
Application number: SU823390369A
Authority: SU
Inventors: Олег Игоревич Матвеев
Original assignee: Matveev Oleg
Priority date: 1982-02-08
Filing date: 1982-02-08
Publication date: 1986-10-23

Description

Изобретение относится к спектральному анализу и может быть использова-\ но для атомно-абсорбционного* эмиссионного ₅ флуоресцентного и ионизационного методов анализа микроконцентраций элементов в веществе.The invention relates to spectral analysis and can be used for atomic absorption * emission ₅ fluorescence and ionization methods for the analysis of microconcentrations of elements in a substance.

Целью изобретения является улучшение воспроизводимости и пределов обнаружения анализа.The aim of the invention is to improve the reproducibility and detection limits of the analysis.

На чертеже представлено устройство для атомизации пробы в пламени. »The drawing shows a device for atomization of a sample in a flame. "

Устройство содержит корпус 1 кольцевой горелки, снабженный штуцером 2 для ввода горючего газа и окислителя и отверстиями 3 для их выхода, и испаритель 4 пробы, установленный в газовом канале 5, расположенном в центре горелки вдоль ее продольной оси на уровне выходных отверстий 3 горелки. Газовый канал 5 соединен с источником инертного газа (не показан) .The device comprises a ring burner body 1, equipped with a nozzle 2 for introducing combustible gas and an oxidizing agent and openings 3 for their outlet, and a sample evaporator 4 mounted in the gas channel 5 located in the center of the burner along its longitudinal axis at the level of the burner outlet 3. The gas channel 5 is connected to an inert gas source (not shown).

Атомизацию пробы осуществляют следующим образом.The atomization of the sample is as follows.

В газовый канал 5 подают инертный газ, который служит для выноса паров и&арившегося вещества в пламя, защиты материала испарителя от кислорода Воздуха и газов пламени, а также для уменьшения химических, тушащих и ионизационных помех газов пламени на величину аналитического сигнала. На поверхность испарителя 4 пробы, в качестве которого могут быть использо5 ваны лодочки, спирали, чашечки из тугоплавких материалов, наносят каплю раствора пробы. Через штуцер 2 внутрь корпуса 1 горелки подают горючий газ и окислитель, после чего зажигают пламя. Испаритель 4 нагревают сначала до температуры испарения растворителя, а затем - до температуры испарения пробы и с помощью инертного газа осуществляют вынос вещества пробы 15 s пламя.An inert gas is supplied to the gas channel 5, which serves to carry vapors and flavored substances into the flame, protect the evaporator material from oxygen, air and flame gases, and also to reduce the chemical, quenching, and ionization noise of the flame gases by the value of the analytical signal. On the surface of the evaporator 4 samples, which can be used boats, spirals, cups of refractory materials, a drop of sample solution is applied. Through the fitting 2, combustible gas and an oxidizing agent are fed into the burner body 1, after which a flame is ignited. The evaporator 4 is heated first to the temperature of evaporation of the solvent, and then to the temperature of evaporation of the sample and with the help of an inert gas carry out the removal of the sample substance 15 s flame.

Claims

The invention relates to spectral analysis and can be used: for atomic absorption ;, enzionnyh fluorescence and ionization methods for analyzing the microconcentrations of elements in a substance. The aim of the invention is ul: better than reproducibility and detection limits of analysis. The drawing shows a device for atomization of a sample in a flame. The device includes a ring burner body 1, equipped with a fitting 2 for introducing a combustible gas and an oxidizer and holes 3 for their exit and an evaporator 4 samples installed in the gas channel 5 located in the center of the burner along its longitudinal axis at the level of the outlet 3 burner. Gas channel 5 with an inert gas source (not shown). The sample is atomized as follows. An inert gas is supplied to the gas channel 5, which serves to transport vapor of the evaporated substance into flame j, evaporator material protection from acid, air, and flame gases, as well as to reduce chemical gases, gas and ionization interference from the flame gases to the value of the analytical signal. On the surface of the evaporator 4 samples, in which can be used boats, spirals, cups of refractory materials, put a drop of sample solution. Through the nozzle 2 into the housing 1 of the burner serves a combustible gas and an oxidizer, after which the flame is ignited. The evaporator 4 is first heated to the evaporation temperature of the solvent, and then to the sample evaporation temperature, and the sample substance is carried to the flame with the help of an inert gas. The invention The device for atomization of a sample in a flame, including a burner and a sample evaporator, isolated from the combustion zone, installed in the gas channel, located in the center of the burner along its longitudinal axis, characterized in that, in order to improve the reproducibility and detection limits of the analysis, the evaporator The sample is installed in the gas channel at the level of the outlet openings of the burner, and the gas flow is connected to an inert gas source.