5800 icp oes

Artificial seawater was formulated with the following composition: 26.5 g NaCl, 3.3 g MgSO₄, 2.4 g MgCl₂, 1.3 g CaCl₂, 0.7 g KCl, 0.2 g NaHCO₃, and 0.08 g NaBr dissolved in 1 L of water. The evaporated water was collected and tested for metal ions using an ICP-OES (Agilent 5800 ICP-OES, Santa Clara, CA, USA).

The morphologies and elemental mapping of series catalysts were observed by scanning electron microscopy (SEM, Zeiss, sigma500, Jena, Germany) with an Oxford Ultim Max Large Area SDD EDS detector. The size of catalysts was measured by a laser particle size analyzer (Malvern, MS-2000, Malvern, UK). The crystallographic structures of catalysts were characterized by a high-resolution transmission electron microscope (HRTEM, JEM-2100, Tokyo, Japan) and X-ray diffraction (XRD, Rigaku Corporation, XRD-6000, Tokyo, Japan). The specific surface area and pore size distribution of samples were analyzed by Brunauer–Emmett–Teller (BET) and Barrett–Joyner–Halenda (BJH) methods, respectively. A Fourier-transform infrared spectrophotometer (FT-IR, American Nicolet Corp. Model 170-SX, Green Bay, WI, USA) was used to investigate the chemical structures of the catalyst. X-ray photoelectron spectroscopy (XPS, Thermo Fisher Scientific, ESCALAB250Xi, Waltham, MA, USA) was utilized to study the surface chemical composition of catalysts. To study the catalytic mechanism of CDM, an electron paramagnetic resonance spectrometer (Bruker ELEXSYS E500, Karlsruhe, Germany) was used to obtain the EPR signals. The leaching of Cu and Mn in wastewater was detected by an inductively coupled plasma spectrometer (Agilent 5800 ICP-OES, Santa Clara, CA, USA).

Samples of freeze-dried microgreens of the tested radish cultivars were submitted to the National Instrumentation Center for Environmental Management (NICEM) Laboratory. Samples were analyzed for total nitrogen using the Kjeldahl method [21 (link)] and macrominerals (P, K, Ca, Mg, and Na) and microminerals (Mn, Fe, Cu, Mo, and Zn) were tested following microwave-assisted acid digestion standard method 3051 [22 ] using inductively coupled plasma optical emission spectroscopy (5800 ICP-OES, Agilent, Santa Clara, CA, USA).

ICG@ZIF-8/PEG-FA NPs and free ICG were injected into the H22 tumor-bearing mice via the tail vein, respectively. Fluorescent images were captured at different time points using IVIS imaging system (IVIS Lumina, PerkinElmer, USA). The tumor-bearing mice were euthanized to obtain tumors and important organs for fluorescent imaging after 24 h. At the same time, a few tumor tissues and organs were cauterized and nitrified, and subsequently the concentration of [Zn²⁺] was determined by 5800 ICP-OES (Agilent, Japan).

Nitric acid digestion and metal concentration analysis were carried out, as described in Kobayashi et al. (2013 (link)), with slight modifications as below. For each replicate, 6–10 brown seeds were dehusked and dried for 2 d at 70 °C, weighed, and wet-ashed with 1.0–1.5 mL of 13.4 M nitric acid and 1.0–1.5 mL of 8.8 M hydrogen peroxide for 20 min at 220 °C using a MarsXpress oven (CEM, Matthews, NC, USA). Straw segments were cut into 3–4 cm pieces and dried for 2–3 d at 70 °C, and portions weighing 100–200 mg were wet-ashed with 2.0 mL of 13.4 M nitric acid and 2.0 mL of 8.8 M hydrogen peroxide for 20 min at 230 °C. Inductively coupled plasma optical emission spectrometry (5800 ICP-OES, Agilent, Japan) was used to measure Fe, Zn, manganese (Mn) and copper (Cu) concentrations.

Bulk chemical
compositions were determined via ICP (Agilent 5800 ICP-OES). Samples
were dissolved in a solution consisting of a 10:1 (v/v) ratio of 70%
HNO₃ (Sigma-Aldrich) and concentrated HCl (Sigma-Aldrich).

The collected bulk soil samples were air-dried at room temperature in the shade and passed through a 2-mm sieve. The soil samples were mixed with DW at a ratio of 1:5 (w/v) for 30 min at 200 rpm, and the pH and electrical conductivity (EC) of the soils were determined using a pH meter (HI 9124, Hanna Instruments, United States) and EC meter (HI9033, Hanna), respectively. To determine the exchangeable cation content, 5 g of soil was mixed with 50 mL ammonium acetate (1 N, pH 7.0) solution for 30 min at 200 rpm and filtered to remove soil particles. The exchangeable Ca²⁺, K⁺, Na⁺, and Mg²⁺ contents were analyzed using inductively coupled plasma optical emission spectrometry (ICP-OES; 5800 ICP-OES, Agilent, United States) (Hwang and Son, 2006 (link)).