Determination of Metal Elements in Stonefish Teabag by ICP-AES and AAS

Taiyiyu is a mineral medicine rich in iron. The Shennongbong herb was listed as a top grade, and he believed that "a long service can prolong life." (The Compendium of Materia Medica records that "the Jiufu Cold-resistance Department is not hungry, and the light body will not grow old, except evil spirits."

Modern pharmacological studies have shown that Muyu stone has antibacterial properties, enhances body immunity, anti-aging, and anti-tumor effects, and possesses certain analgesic effects and promotes hematopoiesis. Acute and chronic toxicity tests showed no obvious toxic side effects. The main component of the fish rock is iron sesquioxide, and the low iron content is used as an important storage basis to identify its directness and inferiority. Muyu stone also contains a variety of essential trace elements and macro elements. Ren Renfa W et al. Chemically analyzed the chemical composition before and after the processing of glutinous rice grains, and considered that the sardine soil and illite were contained in the squid stone. The content of trace elements varied from place to place. In this paper, the content of some trace elements in the water soaking solution of squid teabag was determined by flame atomic absorption spectrophotometry at different time and temperature. The infusions and wooden fish of squid tea bags were determined by inductively coupled plasma-atomic emission spectrometry. The content of some elements in the stone digestive liquid provides a scientific basis for the development and utilization of columbine.

1 Materials and Instruments Muyu Rock was collected from Bidu Village, Bidu Township, Changle County, Shandong Province and was irregularly massive. The surface was dark brown, hard and hard to break, and the sound was buzzing. powder.

AA470 Atomic Absorption Spectrophotometer, product of Shimadzu, Japan. ICAP-9000 Inductively Coupled Plasma Optical Emission Spectrometer with Apple-plas data detection and recording system, product of Arrell-Ash, USA.

2 Experimental methods 2.1 Processing and processing The squid stone is calcined in the coal stove at high temperature until it turns red. Immediately after removal, it is cast into vinegar and quenched. After cooling, it is crushed and sieved to take 20-80 mesh size granules. Inside the bag, 5 grams per bag, spare.

2.2 The best leaching conditions test distilled water 10ml respectively in ioor and 2 (rc immersed in wooden rockbag tea, soaking time is 10, 30, 60 and 210min. soaking solution drying, adding concentrated nitric acid digestion (250 45-50min) , Deionized water volume, with Zn, Cu, Fe, Mn, Sr, and other six elements as experimental indicators to determine the best conditions.

2.31 Determination of Metal Elements by CP-AES Placement of a wooden tea bag (5 grams per bag) in 50 ml of distilled water, 851: constant temperature for 1 hour, followed by filtration, filtrate preparation. In addition, take the appropriate amount of cochin stone, place the pressure reaction kettle (PTFE lined, plus stainless steel sleeve) in the grade of pure concentrated nitric acid to obtain a transparent digestive liquid, and determine a variety of metal elements using the CP-AES method. content.

3 Results and discussion 3.1 Effect of soaking time and temperature on elemental leaching (AAS) The experimental results are shown in Table 1. From the experimental results, it can be seen that the leaching time and temperature have a greater influence on the leaching amount of the above six elements. The immersion temperature of the soaking temperature in Table 1 is determined by the time and temperature of the brewing time in Table 1 and the Zn loot' leaching from the gold elements of the squid teabag gold tea is good. Except for individual elements, the leaching amount of most elements at around 100X is significantly lower than that at 20X. : Conditions. Under the same temperature conditions, the longer the time, the greater the amount of leaching of each element (except for individual), soaking time 60 and 210min, the amount of leaching of each element is slightly higher. From this we determined the best conditions: soaking time lh, soaking temperature is lOOt: about. 3.2 Determination of metal elements in the digestive liquor and in soaking solution of yukite (ICP-AES) The experimental results are shown in Table 2. Table 2 Elements contained in the digestive liquor and soaking solution of the squid stone (卩g/ml) From the measurement results, it can be seen that Ca, Cu, K, Mg, Mn, Na, Sr and other elements are detected in the soaking solution and the digestion solution, and it can be inferred that these elements exist in the form of salt in the cod fish stone, in which Cu The content of Mg, K, N; I in the digestive solution is higher than that in the soaking solution, while the elements Ca, Mn, and Sr are the opposite. The elements Al, Fe, and Zn were detected only in the digestive liquid, indicating that the above three elements exist as oxides in the cod fish stone, and no elements such as Cd, Pb, and NuHg were detected in the digestive liquid and the filtrate. In addition, we also detected that the cod fish stone contains P, S, Si and other non-metallic elements.

4 Discussion The most abundant metal element in muyu stone is iron. Judging from the results of the measurement, the iron content in the digestive fluid of the muyu stone is very high, 3.66 mg/g (calculated from the raw material of the squid stone) far beyond the content of other elements (K Except Na). In addition, it can be seen that after the wooden tea bag is soaked, if the soaking solution is not filtered, it is dried and then digested by concentrated nitric acid, and elemental iron can be detected in the digestive liquid; if the soaking solution is filtered and then measured, it is detected. Less than elemental iron. The above experimental results are not contradictory. In Muyu stone, elemental iron is mainly in the form of oxide (FeO), a series of basic oxides, insoluble in water, soluble only in acid, and after being quenched by vinegar, some of the Fe23 is formed. Powder-like, can be revealed from the non-woven tea bag, and can not pass through the filter paper, so whether the test solution of the test solution is completely different from that of the filter bag. When drinking wooden tea rockbag tea, Fe23 suspension powder can enter the human stomach directly with water and neutralize with stomach acid to generate Fe2+, which can be absorbed and utilized by the body. Similar to the case of elemental iron, there are A1 and Zn. According to the biological effects of trace elements in animals, it is generally divided into three categories: necessary, possibly necessary, and non-essential. After a century of efforts, the more commonly recognized essential trace elements are Iron, Copper, Zinc, Cobalt, Nickel, Molybdenum, Copper, Tin, Muscle, Strontium, Fluoride, Iodine, Arsenic, etc. 5'61, and believe that these essential elements are closely related to the human body's biochemical and physiological activities. The body produces adverse effects and even causes disease. The amount of each trace element taken by the ordinary diet is uneven, and some do not even contain, so it is necessary to add some trace elements that are lacking in the ordinary diet. Based on the chemical elemental analysis of Jokyu, we found that it contains iron, copper, zinc, barium, silicon and other essential trace elements and a large amount of macro elements such as potassium, sodium, calcium and magnesium, among which iron content is particularly high. Relatively recognized elements harmful to the human body such as copper, cadmium, and mercury have not been detected. Therefore, regular consumption of wooden fish stone teabag will make the body lack some of the trace elements to be a beneficial supplement to enhance the body's immune system.